From 546e520c353e28a8bdbf7f43d1293bcc337c2ae2 Mon Sep 17 00:00:00 2001
From: Alan Knowles <alan@roojs.com>
Date: Thu, 15 Oct 2020 12:55:19 +0800
Subject: [PATCH] scss/bootstrap/_alert.scss scss/bootstrap/_badge.scss
 scss/bootstrap/bootstrap-grid.scss scss/bootstrap/bootstrap-reboot.scss
 scss/bootstrap/bootstrap.scss scss/bootstrap/bootstrap-utilities.scss
 scss/bootstrap/_breadcrumb.scss scss/bootstrap/_button-group.scss
 scss/bootstrap/_buttons.scss scss/bootstrap/_card.scss
 scss/bootstrap/_carousel.scss scss/bootstrap/_close.scss
 scss/bootstrap/_code.scss scss/bootstrap/_containers.scss
 scss/bootstrap/_custom-forms.scss scss/bootstrap/_dropdown.scss
 scss/bootstrap/forms scss/bootstrap/_forms.scss
 scss/bootstrap/_functions.scss scss/bootstrap/_grid.scss
 scss/bootstrap/helpers scss/bootstrap/_helpers.scss
 scss/bootstrap/_images.scss scss/bootstrap/_input-group.scss
 scss/bootstrap/_jumbotron.scss scss/bootstrap/_list-group.scss
 scss/bootstrap/_media.scss scss/bootstrap/mixins scss/bootstrap/_mixins.scss
 scss/bootstrap/_modal.scss scss/bootstrap/_navbar.scss
 scss/bootstrap/_nav.scss scss/bootstrap/_pagination.scss
 scss/bootstrap/_popover.scss scss/bootstrap/_print.scss
 scss/bootstrap/_progress.scss scss/bootstrap/_reboot.scss
 scss/bootstrap/_root.scss scss/bootstrap/_spinners.scss
 scss/bootstrap/_tables.scss scss/bootstrap/_toasts.scss
 scss/bootstrap/_tooltip.scss scss/bootstrap/_transitions.scss
 scss/bootstrap/_type.scss scss/bootstrap/utilities
 scss/bootstrap/_utilities.scss scss/bootstrap/_variables.scss
 scss/bootstrap/vendor scss/bootstrap/mixins/_table-row.scss
 scss/bootstrap/mixins/_forms.scss scss/bootstrap/mixins/_hover.scss
 scss/bootstrap/mixins/_box-shadow.scss scss/bootstrap/mixins/_utilities.scss
 scss/bootstrap/mixins/_visually-hidden.scss
 scss/bootstrap/mixins/_border-radius.scss
 scss/bootstrap/mixins/_pagination.scss scss/bootstrap/mixins/_reset-text.scss
 scss/bootstrap/mixins/_badge.scss scss/bootstrap/mixins/_resize.scss
 scss/bootstrap/mixins/_grid-framework.scss
 scss/bootstrap/mixins/_background-variant.scss
 scss/bootstrap/mixins/_lists.scss scss/bootstrap/mixins/_grid.scss
 scss/bootstrap/mixins/_float.scss scss/bootstrap/mixins/_clearfix.scss
 scss/bootstrap/mixins/_text-hide.scss scss/bootstrap/mixins/_size.scss
 scss/bootstrap/mixins/_alert.scss scss/bootstrap/mixins/_visibility.scss
 scss/bootstrap/mixins/_container.scss scss/bootstrap/mixins/_breakpoints.scss
 scss/bootstrap/mixins/_buttons.scss
 scss/bootstrap/mixins/_table-variants.scss
 scss/bootstrap/mixins/_text-truncate.scss
 scss/bootstrap/mixins/_list-group.scss scss/bootstrap/mixins/_gradients.scss
 scss/bootstrap/mixins/_transition.scss scss/bootstrap/mixins/_image.scss
 scss/bootstrap/mixins/_screen-reader.scss
 scss/bootstrap/mixins/_text-emphasis.scss
 scss/bootstrap/mixins/_nav-divider.scss scss/bootstrap/mixins/_caret.scss
 scss/bootstrap/mixins/_deprecate.scss
 scss/bootstrap/utilities/_screenreaders.scss
 scss/bootstrap/utilities/_spacing.scss scss/bootstrap/utilities/_sizing.scss
 scss/bootstrap/utilities/_shadows.scss scss/bootstrap/utilities/_text.scss
 scss/bootstrap/utilities/_align.scss scss/bootstrap/utilities/_flex.scss
 scss/bootstrap/utilities/_api.scss scss/bootstrap/utilities/_float.scss
 scss/bootstrap/utilities/_clearfix.scss scss/bootstrap/utilities/_embed.scss
 scss/bootstrap/utilities/_visibility.scss
 scss/bootstrap/utilities/_display.scss
 scss/bootstrap/utilities/_position.scss
 scss/bootstrap/utilities/_background.scss
 scss/bootstrap/utilities/_overflow.scss
 scss/bootstrap/utilities/_borders.scss scss/bootstrap/forms/_labels.scss
 scss/bootstrap/forms/_form-file.scss scss/bootstrap/forms/_form-control.scss
 scss/bootstrap/forms/_form-select.scss scss/bootstrap/forms/_form-range.scss
 scss/bootstrap/forms/_input-group.scss scss/bootstrap/forms/_form-text.scss
 scss/bootstrap/forms/_validation.scss scss/bootstrap/forms/_form-check.scss
 scss/bootstrap/helpers/_visually-hidden.scss
 scss/bootstrap/helpers/_stretched-link.scss
 scss/bootstrap/helpers/_clearfix.scss scss/bootstrap/helpers/_ratio.scss
 scss/bootstrap/helpers/_position.scss
 scss/bootstrap/helpers/_colored-links.scss
 scss/bootstrap/helpers/_text-truncation.scss scss/bootstrap/vendor/_rfs.scss

---
 scss/bootstrap/_alert.scss                    |   51 -
 scss/bootstrap/_badge.scss                    |   53 -
 scss/bootstrap/_breadcrumb.scss               |   41 -
 scss/bootstrap/_button-group.scss             |  163 ---
 scss/bootstrap/_buttons.scss                  |  140 ---
 scss/bootstrap/_card.scss                     |  310 -----
 scss/bootstrap/_carousel.scss                 |  198 ---
 scss/bootstrap/_close.scss                    |   44 -
 scss/bootstrap/_code.scss                     |   48 -
 scss/bootstrap/_custom-forms.scss             |  466 -------
 scss/bootstrap/_dropdown.scss                 |  191 ---
 scss/bootstrap/_forms.scss                    |  334 -----
 scss/bootstrap/_functions.scss                |   86 --
 scss/bootstrap/_grid.scss                     |   52 -
 scss/bootstrap/_images.scss                   |   42 -
 scss/bootstrap/_input-group.scss              |  193 ---
 scss/bootstrap/_jumbotron.scss                |   16 -
 scss/bootstrap/_list-group.scss               |  121 --
 scss/bootstrap/_media.scss                    |    8 -
 scss/bootstrap/_mixins.scss                   |   41 -
 scss/bootstrap/_modal.scss                    |  186 ---
 scss/bootstrap/_nav.scss                      |  120 --
 scss/bootstrap/_navbar.scss                   |  299 -----
 scss/bootstrap/_pagination.scss               |   78 --
 scss/bootstrap/_popover.scss                  |  183 ---
 scss/bootstrap/_print.scss                    |  141 ---
 scss/bootstrap/_progress.scss                 |   34 -
 scss/bootstrap/_reboot.scss                   |  475 -------
 scss/bootstrap/_root.scss                     |   19 -
 scss/bootstrap/_spinners.scss                 |   57 -
 scss/bootstrap/_tables.scss                   |  187 ---
 scss/bootstrap/_toasts.scss                   |   34 -
 scss/bootstrap/_tooltip.scss                  |  115 --
 scss/bootstrap/_transitions.scss              |   22 -
 scss/bootstrap/_type.scss                     |  125 --
 scss/bootstrap/_utilities.scss                |   16 -
 scss/bootstrap/_variables.scss                | 1088 -----------------
 scss/bootstrap/bootstrap-grid.scss            |   33 -
 scss/bootstrap/bootstrap-reboot.scss          |   12 -
 scss/bootstrap/bootstrap.scss                 |   47 -
 scss/bootstrap/mixins/_alert.scss             |   13 -
 .../bootstrap/mixins/_background-variant.scss |   21 -
 scss/bootstrap/mixins/_badge.scss             |   12 -
 scss/bootstrap/mixins/_border-radius.scss     |   35 -
 scss/bootstrap/mixins/_box-shadow.scss        |    5 -
 scss/bootstrap/mixins/_breakpoints.scss       |  123 --
 scss/bootstrap/mixins/_buttons.scss           |  111 --
 scss/bootstrap/mixins/_caret.scss             |   62 -
 scss/bootstrap/mixins/_clearfix.scss          |    7 -
 scss/bootstrap/mixins/_float.scss             |   11 -
 scss/bootstrap/mixins/_forms.scss             |  198 ---
 scss/bootstrap/mixins/_gradients.scss         |   45 -
 scss/bootstrap/mixins/_grid-framework.scss    |   66 -
 scss/bootstrap/mixins/_grid.scss              |   51 -
 scss/bootstrap/mixins/_hover.scss             |   37 -
 scss/bootstrap/mixins/_image.scss             |   36 -
 scss/bootstrap/mixins/_list-group.scss        |   21 -
 scss/bootstrap/mixins/_lists.scss             |    7 -
 scss/bootstrap/mixins/_nav-divider.scss       |   10 -
 scss/bootstrap/mixins/_pagination.scss        |   22 -
 scss/bootstrap/mixins/_reset-text.scss        |   17 -
 scss/bootstrap/mixins/_resize.scss            |    6 -
 scss/bootstrap/mixins/_screen-reader.scss     |   33 -
 scss/bootstrap/mixins/_size.scss              |    6 -
 scss/bootstrap/mixins/_table-row.scss         |   39 -
 scss/bootstrap/mixins/_text-emphasis.scss     |   14 -
 scss/bootstrap/mixins/_text-hide.scss         |   13 -
 scss/bootstrap/mixins/_text-truncate.scss     |    8 -
 scss/bootstrap/mixins/_transition.scss        |   16 -
 scss/bootstrap/mixins/_visibility.scss        |    7 -
 scss/bootstrap/utilities/_align.scss          |    8 -
 scss/bootstrap/utilities/_background.scss     |   19 -
 scss/bootstrap/utilities/_borders.scss        |   63 -
 scss/bootstrap/utilities/_clearfix.scss       |    3 -
 scss/bootstrap/utilities/_display.scss        |   38 -
 scss/bootstrap/utilities/_embed.scss          |   39 -
 scss/bootstrap/utilities/_flex.scss           |   51 -
 scss/bootstrap/utilities/_float.scss          |    9 -
 scss/bootstrap/utilities/_overflow.scss       |    5 -
 scss/bootstrap/utilities/_position.scss       |   32 -
 scss/bootstrap/utilities/_screenreaders.scss  |   11 -
 scss/bootstrap/utilities/_shadows.scss        |    6 -
 scss/bootstrap/utilities/_sizing.scss         |   20 -
 scss/bootstrap/utilities/_spacing.scss        |   73 --
 scss/bootstrap/utilities/_text.scss           |   67 -
 scss/bootstrap/utilities/_visibility.scss     |   11 -
 86 files changed, 7376 deletions(-)
 delete mode 100644 scss/bootstrap/_alert.scss
 delete mode 100644 scss/bootstrap/_badge.scss
 delete mode 100644 scss/bootstrap/_breadcrumb.scss
 delete mode 100644 scss/bootstrap/_button-group.scss
 delete mode 100644 scss/bootstrap/_buttons.scss
 delete mode 100644 scss/bootstrap/_card.scss
 delete mode 100644 scss/bootstrap/_carousel.scss
 delete mode 100644 scss/bootstrap/_close.scss
 delete mode 100644 scss/bootstrap/_code.scss
 delete mode 100644 scss/bootstrap/_custom-forms.scss
 delete mode 100644 scss/bootstrap/_dropdown.scss
 delete mode 100644 scss/bootstrap/_forms.scss
 delete mode 100644 scss/bootstrap/_functions.scss
 delete mode 100644 scss/bootstrap/_grid.scss
 delete mode 100644 scss/bootstrap/_images.scss
 delete mode 100644 scss/bootstrap/_input-group.scss
 delete mode 100644 scss/bootstrap/_jumbotron.scss
 delete mode 100644 scss/bootstrap/_list-group.scss
 delete mode 100644 scss/bootstrap/_media.scss
 delete mode 100644 scss/bootstrap/_mixins.scss
 delete mode 100644 scss/bootstrap/_modal.scss
 delete mode 100644 scss/bootstrap/_nav.scss
 delete mode 100644 scss/bootstrap/_navbar.scss
 delete mode 100644 scss/bootstrap/_pagination.scss
 delete mode 100644 scss/bootstrap/_popover.scss
 delete mode 100644 scss/bootstrap/_print.scss
 delete mode 100644 scss/bootstrap/_progress.scss
 delete mode 100644 scss/bootstrap/_reboot.scss
 delete mode 100644 scss/bootstrap/_root.scss
 delete mode 100644 scss/bootstrap/_spinners.scss
 delete mode 100644 scss/bootstrap/_tables.scss
 delete mode 100644 scss/bootstrap/_toasts.scss
 delete mode 100644 scss/bootstrap/_tooltip.scss
 delete mode 100644 scss/bootstrap/_transitions.scss
 delete mode 100644 scss/bootstrap/_type.scss
 delete mode 100644 scss/bootstrap/_utilities.scss
 delete mode 100644 scss/bootstrap/_variables.scss
 delete mode 100644 scss/bootstrap/bootstrap-grid.scss
 delete mode 100644 scss/bootstrap/bootstrap-reboot.scss
 delete mode 100644 scss/bootstrap/bootstrap.scss
 delete mode 100644 scss/bootstrap/mixins/_alert.scss
 delete mode 100644 scss/bootstrap/mixins/_background-variant.scss
 delete mode 100644 scss/bootstrap/mixins/_badge.scss
 delete mode 100644 scss/bootstrap/mixins/_border-radius.scss
 delete mode 100644 scss/bootstrap/mixins/_box-shadow.scss
 delete mode 100644 scss/bootstrap/mixins/_breakpoints.scss
 delete mode 100644 scss/bootstrap/mixins/_buttons.scss
 delete mode 100644 scss/bootstrap/mixins/_caret.scss
 delete mode 100644 scss/bootstrap/mixins/_clearfix.scss
 delete mode 100644 scss/bootstrap/mixins/_float.scss
 delete mode 100644 scss/bootstrap/mixins/_forms.scss
 delete mode 100644 scss/bootstrap/mixins/_gradients.scss
 delete mode 100644 scss/bootstrap/mixins/_grid-framework.scss
 delete mode 100644 scss/bootstrap/mixins/_grid.scss
 delete mode 100644 scss/bootstrap/mixins/_hover.scss
 delete mode 100644 scss/bootstrap/mixins/_image.scss
 delete mode 100644 scss/bootstrap/mixins/_list-group.scss
 delete mode 100644 scss/bootstrap/mixins/_lists.scss
 delete mode 100644 scss/bootstrap/mixins/_nav-divider.scss
 delete mode 100644 scss/bootstrap/mixins/_pagination.scss
 delete mode 100644 scss/bootstrap/mixins/_reset-text.scss
 delete mode 100644 scss/bootstrap/mixins/_resize.scss
 delete mode 100644 scss/bootstrap/mixins/_screen-reader.scss
 delete mode 100644 scss/bootstrap/mixins/_size.scss
 delete mode 100644 scss/bootstrap/mixins/_table-row.scss
 delete mode 100644 scss/bootstrap/mixins/_text-emphasis.scss
 delete mode 100644 scss/bootstrap/mixins/_text-hide.scss
 delete mode 100644 scss/bootstrap/mixins/_text-truncate.scss
 delete mode 100644 scss/bootstrap/mixins/_transition.scss
 delete mode 100644 scss/bootstrap/mixins/_visibility.scss
 delete mode 100644 scss/bootstrap/utilities/_align.scss
 delete mode 100644 scss/bootstrap/utilities/_background.scss
 delete mode 100644 scss/bootstrap/utilities/_borders.scss
 delete mode 100644 scss/bootstrap/utilities/_clearfix.scss
 delete mode 100644 scss/bootstrap/utilities/_display.scss
 delete mode 100644 scss/bootstrap/utilities/_embed.scss
 delete mode 100644 scss/bootstrap/utilities/_flex.scss
 delete mode 100644 scss/bootstrap/utilities/_float.scss
 delete mode 100644 scss/bootstrap/utilities/_overflow.scss
 delete mode 100644 scss/bootstrap/utilities/_position.scss
 delete mode 100644 scss/bootstrap/utilities/_screenreaders.scss
 delete mode 100644 scss/bootstrap/utilities/_shadows.scss
 delete mode 100644 scss/bootstrap/utilities/_sizing.scss
 delete mode 100644 scss/bootstrap/utilities/_spacing.scss
 delete mode 100644 scss/bootstrap/utilities/_text.scss
 delete mode 100644 scss/bootstrap/utilities/_visibility.scss

diff --git a/scss/bootstrap/_alert.scss b/scss/bootstrap/_alert.scss
deleted file mode 100644
index dd43e2376a..0000000000
--- a/scss/bootstrap/_alert.scss
+++ /dev/null
@@ -1,51 +0,0 @@
-//
-// Base styles
-//
-
-.alert {
-  position: relative;
-  padding: $alert-padding-y $alert-padding-x;
-  margin-bottom: $alert-margin-bottom;
-  border: $alert-border-width solid transparent;
-  @include border-radius($alert-border-radius);
-}
-
-// Headings for larger alerts
-.alert-heading {
-  // Specified to prevent conflicts of changing $headings-color
-  color: inherit;
-}
-
-// Provide class for links that match alerts
-.alert-link {
-  font-weight: $alert-link-font-weight;
-}
-
-
-// Dismissible alerts
-//
-// Expand the right padding and account for the close button's positioning.
-
-.alert-dismissible {
-  padding-right: ($close-font-size + $alert-padding-x * 2);
-
-  // Adjust close link position
-  .close {
-    position: absolute;
-    top: 0;
-    right: 0;
-    padding: $alert-padding-y $alert-padding-x;
-    color: inherit;
-  }
-}
-
-
-// Alternate styles
-//
-// Generate contextual modifier classes for colorizing the alert.
-
-@each $color, $value in $theme-colors {
-  .alert-#{$color} {
-    @include alert-variant(theme-color-level($color, $alert-bg-level), theme-color-level($color, $alert-border-level), theme-color-level($color, $alert-color-level));
-  }
-}
diff --git a/scss/bootstrap/_badge.scss b/scss/bootstrap/_badge.scss
deleted file mode 100644
index 3e144f24c6..0000000000
--- a/scss/bootstrap/_badge.scss
+++ /dev/null
@@ -1,53 +0,0 @@
-// Base class
-//
-// Requires one of the contextual, color modifier classes for `color` and
-// `background-color`.
-
-.badge {
-  display: inline-block;
-  padding: $badge-padding-y $badge-padding-x;
-  font-size: $badge-font-size;
-  font-weight: $badge-font-weight;
-  line-height: 1;
-  text-align: center;
-  white-space: nowrap;
-  vertical-align: baseline;
-  @include border-radius($badge-border-radius);
-/*
-  @at-root a#{&} {
-    @include hover-focus {
-      text-decoration: none;
-    }
-  }
-*/
-  // Empty badges collapse automatically
-  &:empty {
-    display: none;
-  }
-}
-
-// Quick fix for badges in buttons
-.btn .badge {
-  position: relative;
-  top: -1px;
-}
-
-// Pill badges
-//
-// Make them extra rounded with a modifier to replace v3's badges.
-
-.badge-pill {
-  padding-right: $badge-pill-padding-x;
-  padding-left: $badge-pill-padding-x;
-  @include border-radius($badge-pill-border-radius);
-}
-
-// Colors
-//
-// Contextual variations (linked badges get darker on :hover).
-
-@each $color, $value in $theme-colors {
-  .badge-#{$color} {
-    @include badge-variant($value);
-  }
-}
diff --git a/scss/bootstrap/_breadcrumb.scss b/scss/bootstrap/_breadcrumb.scss
deleted file mode 100644
index be30950690..0000000000
--- a/scss/bootstrap/_breadcrumb.scss
+++ /dev/null
@@ -1,41 +0,0 @@
-.breadcrumb {
-  display: flex;
-  flex-wrap: wrap;
-  padding: $breadcrumb-padding-y $breadcrumb-padding-x;
-  margin-bottom: $breadcrumb-margin-bottom;
-  list-style: none;
-  background-color: $breadcrumb-bg;
-  @include border-radius($breadcrumb-border-radius);
-}
-
-.breadcrumb-item {
-  // The separator between breadcrumbs (by default, a forward-slash: "/")
-  + .breadcrumb-item {
-    padding-left: $breadcrumb-item-padding;
-
-    &::before {
-      display: inline-block; // Suppress underlining of the separator in modern browsers
-      padding-right: $breadcrumb-item-padding;
-      color: $breadcrumb-divider-color;
-      content: $breadcrumb-divider;
-    }
-  }
-
-  // IE9-11 hack to properly handle hyperlink underlines for breadcrumbs built
-  // without `<ul>`s. The `::before` pseudo-element generates an element
-  // *within* the .breadcrumb-item and thereby inherits the `text-decoration`.
-  //
-  // To trick IE into suppressing the underline, we give the pseudo-element an
-  // underline and then immediately remove it.
-  + .breadcrumb-item:hover::before {
-    text-decoration: underline;
-  }
-  // stylelint-disable-next-line no-duplicate-selectors
-  + .breadcrumb-item:hover::before {
-    text-decoration: none;
-  }
-
-  &.active {
-    color: $breadcrumb-active-color;
-  }
-}
diff --git a/scss/bootstrap/_button-group.scss b/scss/bootstrap/_button-group.scss
deleted file mode 100644
index d7220029ad..0000000000
--- a/scss/bootstrap/_button-group.scss
+++ /dev/null
@@ -1,163 +0,0 @@
-// stylelint-disable selector-no-qualifying-type
-
-// Make the div behave like a button
-.btn-group,
-.btn-group-vertical {
-  position: relative;
-  display: inline-flex;
-  vertical-align: middle; // match .btn alignment given font-size hack above
-
-  > .btn {
-    position: relative;
-    flex: 1 1 auto;
-
-    // Bring the hover, focused, and "active" buttons to the front to overlay
-    // the borders properly
-    @include hover {
-      z-index: 1;
-    }
-    &:focus,
-    &:active,
-    &.active {
-      z-index: 1;
-    }
-  }
-}
-
-// Optional: Group multiple button groups together for a toolbar
-.btn-toolbar {
-  display: flex;
-  flex-wrap: wrap;
-  justify-content: flex-start;
-
-  .input-group {
-    width: auto;
-  }
-}
-
-.btn-group {
-  // Prevent double borders when buttons are next to each other
-  > .btn:not(:first-child),
-  > .btn-group:not(:first-child) {
-    margin-left: -$btn-border-width;
-  }
-
-  // Reset rounded corners
-  > .btn:not(:last-child):not(.dropdown-toggle),
-  > .btn-group:not(:last-child) > .btn {
-    @include border-right-radius(0);
-  }
-
-  > .btn:not(:first-child),
-  > .btn-group:not(:first-child) > .btn {
-    @include border-left-radius(0);
-  }
-}
-
-// Sizing
-//
-// Remix the default button sizing classes into new ones for easier manipulation.
-
-.btn-group-sm > .btn { @extend .btn-sm; }
-.btn-group-lg > .btn { @extend .btn-lg; }
-
-
-//
-// Split button dropdowns
-//
-
-.dropdown-toggle-split {
-  padding-right: $btn-padding-x * .75;
-  padding-left: $btn-padding-x * .75;
-
-  &::after,
-  .dropup &::after,
-  .dropright &::after {
-    margin-left: 0;
-  }
-
-  .dropleft &::before {
-    margin-right: 0;
-  }
-}
-
-.btn-sm + .dropdown-toggle-split {
-  padding-right: $btn-padding-x-sm * .75;
-  padding-left: $btn-padding-x-sm * .75;
-}
-
-.btn-lg + .dropdown-toggle-split {
-  padding-right: $btn-padding-x-lg * .75;
-  padding-left: $btn-padding-x-lg * .75;
-}
-
-
-// The clickable button for toggling the menu
-// Set the same inset shadow as the :active state
-.btn-group.show .dropdown-toggle {
-  @include box-shadow($btn-active-box-shadow);
-
-  // Show no shadow for `.btn-link` since it has no other button styles.
-  &.btn-link {
-    @include box-shadow(none);
-  }
-}
-
-
-//
-// Vertical button groups
-//
-
-.btn-group-vertical {
-  flex-direction: column;
-  align-items: flex-start;
-  justify-content: center;
-
-  > .btn,
-  > .btn-group {
-    width: 100%;
-  }
-
-  > .btn:not(:first-child),
-  > .btn-group:not(:first-child) {
-    margin-top: -$btn-border-width;
-  }
-
-  // Reset rounded corners
-  > .btn:not(:last-child):not(.dropdown-toggle),
-  > .btn-group:not(:last-child) > .btn {
-    @include border-bottom-radius(0);
-  }
-
-  > .btn:not(:first-child),
-  > .btn-group:not(:first-child) > .btn {
-    @include border-top-radius(0);
-  }
-}
-
-
-// Checkbox and radio options
-//
-// In order to support the browser's form validation feedback, powered by the
-// `required` attribute, we have to "hide" the inputs via `clip`. We cannot use
-// `display: none;` or `visibility: hidden;` as that also hides the popover.
-// Simply visually hiding the inputs via `opacity` would leave them clickable in
-// certain cases which is prevented by using `clip` and `pointer-events`.
-// This way, we ensure a DOM element is visible to position the popover from.
-//
-// See https://github.com/twbs/bootstrap/pull/12794 and
-// https://github.com/twbs/bootstrap/pull/14559 for more information.
-
-.btn-group-toggle {
-  > .btn,
-  > .btn-group > .btn {
-    margin-bottom: 0; // Override default `<label>` value
-
-    input[type="radio"],
-    input[type="checkbox"] {
-      position: absolute;
-      clip: rect(0, 0, 0, 0);
-      pointer-events: none;
-    }
-  }
-}
diff --git a/scss/bootstrap/_buttons.scss b/scss/bootstrap/_buttons.scss
deleted file mode 100644
index 7c45534e00..0000000000
--- a/scss/bootstrap/_buttons.scss
+++ /dev/null
@@ -1,140 +0,0 @@
-// stylelint-disable selector-no-qualifying-type
-
-//
-// Base styles
-//
-
-.btn {
-  display: inline-block;
-  font-weight: $btn-font-weight;
-  color: $body-color;
-  text-align: center;
-  vertical-align: middle;
-  user-select: none;
-  background-color: transparent;
-  border: $btn-border-width solid transparent;
-  @include button-size($btn-padding-y, $btn-padding-x, $btn-font-size, $btn-line-height, $btn-border-radius);
-  @include transition($btn-transition);
-
-  @include hover {
-    color: $body-color;
-    text-decoration: none;
-  }
-
-  &:focus,
-  &.focus {
-    outline: 0;
-    box-shadow: $btn-focus-box-shadow;
-  }
-
-  // Disabled comes first so active can properly restyle
-  &.disabled,
-  &:disabled {
-    opacity: $btn-disabled-opacity;
-    @include box-shadow(none);
-  }
-
-  // Opinionated: add "hand" cursor to non-disabled .btn elements
-  &:not(:disabled):not(.disabled) {
-    cursor: pointer;
-  }
-
-  &:not(:disabled):not(.disabled):active,
-  &:not(:disabled):not(.disabled).active {
-    @include box-shadow($btn-active-box-shadow);
-
-    &:focus {
-      @include box-shadow($btn-focus-box-shadow, $btn-active-box-shadow);
-    }
-  }
-}
-
-// Future-proof disabling of clicks on `<a>` elements
-a.btn.disabled,
-fieldset:disabled a.btn {
-  pointer-events: none;
-}
-
-
-//
-// Alternate buttons
-//
-
-@each $color, $value in $theme-colors {
-  .btn-#{$color} {
-    @include button-variant($value, $value);
-  }
-}
-
-@each $color, $value in $theme-colors {
-  .btn-outline-#{$color} {
-    @include button-outline-variant($value);
-  }
-}
-
-
-//
-// Link buttons
-//
-
-// Make a button look and behave like a link
-.btn-link {
-  font-weight: $font-weight-normal;
-  color: $link-color;
-
-  @include hover {
-    color: $link-hover-color;
-    text-decoration: $link-hover-decoration;
-  }
-
-  &:focus,
-  &.focus {
-    text-decoration: $link-hover-decoration;
-    box-shadow: none;
-  }
-
-  &:disabled,
-  &.disabled {
-    color: $btn-link-disabled-color;
-    pointer-events: none;
-  }
-
-  // No need for an active state here
-}
-
-
-//
-// Button Sizes
-//
-
-.btn-lg {
-  @include button-size($btn-padding-y-lg, $btn-padding-x-lg, $btn-font-size-lg, $btn-line-height-lg, $btn-border-radius-lg);
-}
-
-.btn-sm {
-  @include button-size($btn-padding-y-sm, $btn-padding-x-sm, $btn-font-size-sm, $btn-line-height-sm, $btn-border-radius-sm);
-}
-
-
-//
-// Block button
-//
-
-.btn-block {
-  display: block;
-  width: 100%;
-
-  // Vertically space out multiple block buttons
-  + .btn-block {
-    margin-top: $btn-block-spacing-y;
-  }
-}
-
-// Specificity overrides
-input[type="submit"],
-input[type="reset"],
-input[type="button"] {
-  &.btn-block {
-    width: 100%;
-  }
-}
diff --git a/scss/bootstrap/_card.scss b/scss/bootstrap/_card.scss
deleted file mode 100644
index f3de02708b..0000000000
--- a/scss/bootstrap/_card.scss
+++ /dev/null
@@ -1,310 +0,0 @@
-//
-// Base styles
-//
-
-.card {
-  position: relative;
-  display: flex;
-  flex-direction: column;
-  min-width: 0;
-  word-wrap: break-word;
-  background-color: $card-bg;
-  background-clip: border-box;
-  border: $card-border-width solid $card-border-color;
-  @include border-radius($card-border-radius);
-
-  > hr {
-    margin-right: 0;
-    margin-left: 0;
-  }
-
-  > .list-group:first-child {
-    .list-group-item:first-child {
-      @include border-top-radius($card-border-radius);
-    }
-  }
-
-  > .list-group:last-child {
-    .list-group-item:last-child {
-      @include border-bottom-radius($card-border-radius);
-    }
-  }
-}
-
-.card-body {
-  // Enable `flex-grow: 1` for decks and groups so that card blocks take up
-  // as much space as possible, ensuring footers are aligned to the bottom.
-  flex: 1 1 auto;
-  padding: $card-spacer-x;
-}
-
-.card-title {
-  margin-bottom: $card-spacer-y;
-}
-
-.card-subtitle {
-  margin-top: -($card-spacer-y / 2);
-  margin-bottom: 0;
-}
-
-.card-text:last-child {
-  margin-bottom: 0;
-}
-
-.card-link {
-  @include hover {
-    text-decoration: none;
-  }
-
-  + .card-link {
-    margin-left: $card-spacer-x;
-  }
-}
-
-//
-// Optional textual caps
-//
-
-.card-header {
-  padding: $card-spacer-y $card-spacer-x;
-  margin-bottom: 0; // Removes the default margin-bottom of <hN>
-  color: $card-cap-color;
-  background-color: $card-cap-bg;
-  border-bottom: $card-border-width solid $card-border-color;
-
-  &:first-child {
-    @include border-radius($card-inner-border-radius $card-inner-border-radius 0 0);
-  }
-
-  + .list-group {
-    .list-group-item:first-child {
-      border-top: 0;
-    }
-  }
-}
-
-.card-footer {
-  padding: $card-spacer-y $card-spacer-x;
-  background-color: $card-cap-bg;
-  border-top: $card-border-width solid $card-border-color;
-
-  &:last-child {
-    @include border-radius(0 0 $card-inner-border-radius $card-inner-border-radius);
-  }
-}
-
-
-//
-// Header navs
-//
-
-.card-header-tabs {
-  margin-right: -($card-spacer-x / 2);
-  margin-bottom: -$card-spacer-y;
-  margin-left: -($card-spacer-x / 2);
-  border-bottom: 0;
-}
-
-.card-header-pills {
-  margin-right: -($card-spacer-x / 2);
-  margin-left: -($card-spacer-x / 2);
-}
-
-// Card image
-.card-img-overlay {
-  position: absolute;
-  top: 0;
-  right: 0;
-  bottom: 0;
-  left: 0;
-  padding: $card-img-overlay-padding;
-}
-
-.card-img {
-  width: 100%; // Required because we use flexbox and this inherently applies align-self: stretch
-  @include border-radius($card-inner-border-radius);
-}
-
-// Card image caps
-.card-img-top {
-  width: 100%; // Required because we use flexbox and this inherently applies align-self: stretch
-  @include border-top-radius($card-inner-border-radius);
-}
-
-.card-img-bottom {
-  width: 100%; // Required because we use flexbox and this inherently applies align-self: stretch
-  @include border-bottom-radius($card-inner-border-radius);
-}
-
-
-// Card deck
-
-.card-deck {
-  display: flex;
-  flex-direction: column;
-
-  .card {
-    margin-bottom: $card-deck-margin;
-  }
-
-  @include media-breakpoint-up(sm) {
-    flex-flow: row wrap;
-    margin-right: -$card-deck-margin;
-    margin-left: -$card-deck-margin;
-
-    .card {
-      display: flex;
-      // Flexbugs #4: https://github.com/philipwalton/flexbugs#flexbug-4
-      flex: 1 0 0%;
-      flex-direction: column;
-      margin-right: $card-deck-margin;
-      margin-bottom: 0; // Override the default
-      margin-left: $card-deck-margin;
-    }
-  }
-}
-
-
-//
-// Card groups
-//
-
-.card-group {
-  display: flex;
-  flex-direction: column;
-
-  // The child selector allows nested `.card` within `.card-group`
-  // to display properly.
-  > .card {
-    margin-bottom: $card-group-margin;
-  }
-
-  @include media-breakpoint-up(sm) {
-    flex-flow: row wrap;
-    // The child selector allows nested `.card` within `.card-group`
-    // to display properly.
-    > .card {
-      // Flexbugs #4: https://github.com/philipwalton/flexbugs#flexbug-4
-      flex: 1 0 0%;
-      margin-bottom: 0;
-
-      + .card {
-        margin-left: 0;
-        border-left: 0;
-      }
-
-      // Handle rounded corners
-      @if $enable-rounded {
-        &:first-child {
-          @include border-right-radius(0);
-
-          .card-img-top,
-          .card-header {
-            border-top-right-radius: 0;
-          }
-          .card-img-bottom,
-          .card-footer {
-            border-bottom-right-radius: 0;
-          }
-        }
-
-        &:last-child {
-          @include border-left-radius(0);
-
-          .card-img-top,
-          .card-header {
-            border-top-left-radius: 0;
-          }
-          .card-img-bottom,
-          .card-footer {
-            border-bottom-left-radius: 0;
-          }
-        }
-
-        &:only-child {
-          @include border-radius($card-border-radius);
-
-          .card-img-top,
-          .card-header {
-            @include border-top-radius($card-border-radius);
-          }
-          .card-img-bottom,
-          .card-footer {
-            @include border-bottom-radius($card-border-radius);
-          }
-        }
-
-        &:not(:first-child):not(:last-child):not(:only-child) {
-          @include border-radius(0);
-
-          .card-img-top,
-          .card-img-bottom,
-          .card-header,
-          .card-footer {
-            @include border-radius(0);
-          }
-        }
-      }
-    }
-  }
-}
-
-
-//
-// Columns
-//
-
-.card-columns {
-  .card {
-    margin-bottom: $card-columns-margin;
-  }
-
-  @include media-breakpoint-up(sm) {
-    column-count: $card-columns-count;
-    column-gap: $card-columns-gap;
-    orphans: 1;
-    widows: 1;
-
-    .card {
-      display: inline-block; // Don't let them vertically span multiple columns
-      width: 100%; // Don't let their width change
-    }
-  }
-}
-
-
-//
-// Accordion
-//
-
-.accordion {
-  .card {
-    overflow: hidden;
-
-    &:not(:first-of-type) {
-      .card-header:first-child {
-        border-radius: 0;
-      }
-
-      &:not(:last-of-type) {
-        border-bottom: 0;
-        border-radius: 0;
-      }
-    }
-
-    &:first-of-type {
-      border-bottom: 0;
-      border-bottom-right-radius: 0;
-      border-bottom-left-radius: 0;
-    }
-
-    &:last-of-type {
-      border-top-left-radius: 0;
-      border-top-right-radius: 0;
-    }
-
-    .card-header {
-      margin-bottom: -$card-border-width;
-    }
-  }
-}
diff --git a/scss/bootstrap/_carousel.scss b/scss/bootstrap/_carousel.scss
deleted file mode 100644
index 3ba447e300..0000000000
--- a/scss/bootstrap/_carousel.scss
+++ /dev/null
@@ -1,198 +0,0 @@
-// Notes on the classes:
-//
-// 1. .carousel.pointer-event should ideally be pan-y (to allow for users to scroll vertically)
-//    even when their scroll action started on a carousel, but for compatibility (with Firefox)
-//    we're preventing all actions instead
-// 2. The .carousel-item-left and .carousel-item-right is used to indicate where
-//    the active slide is heading.
-// 3. .active.carousel-item is the current slide.
-// 4. .active.carousel-item-left and .active.carousel-item-right is the current
-//    slide in its in-transition state. Only one of these occurs at a time.
-// 5. .carousel-item-next.carousel-item-left and .carousel-item-prev.carousel-item-right
-//    is the upcoming slide in transition.
-
-.carousel {
-  position: relative;
-}
-
-.carousel.pointer-event {
-  touch-action: pan-y;
-}
-
-.carousel-inner {
-  position: relative;
-  width: 100%;
-  overflow: hidden;
-  @include clearfix();
-}
-
-.carousel-item {
-  position: relative;
-  display: none;
-  float: left;
-  width: 100%;
-  margin-right: -100%;
-  backface-visibility: hidden;
-  @include transition($carousel-transition);
-}
-
-.carousel-item.active,
-.carousel-item-next,
-.carousel-item-prev {
-  display: block;
-}
-
-.carousel-item-next:not(.carousel-item-left),
-.active.carousel-item-right {
-  transform: translateX(100%);
-}
-
-.carousel-item-prev:not(.carousel-item-right),
-.active.carousel-item-left {
-  transform: translateX(-100%);
-}
-
-
-//
-// Alternate transitions
-//
-
-.carousel-fade {
-  .carousel-item {
-    opacity: 0;
-    transition-property: opacity;
-    transform: none;
-  }
-
-  .carousel-item.active,
-  .carousel-item-next.carousel-item-left,
-  .carousel-item-prev.carousel-item-right {
-    z-index: 1;
-    opacity: 1;
-  }
-
-  .active.carousel-item-left,
-  .active.carousel-item-right {
-    z-index: 0;
-    opacity: 0;
-    @include transition(0s $carousel-transition-duration opacity);
-  }
-}
-
-
-//
-// Left/right controls for nav
-//
-
-.carousel-control-prev,
-.carousel-control-next {
-  position: absolute;
-  top: 0;
-  bottom: 0;
-  z-index: 1;
-  // Use flex for alignment (1-3)
-  display: flex; // 1. allow flex styles
-  align-items: center; // 2. vertically center contents
-  justify-content: center; // 3. horizontally center contents
-  width: $carousel-control-width;
-  color: $carousel-control-color;
-  text-align: center;
-  opacity: $carousel-control-opacity;
-  @include transition($carousel-control-transition);
-
-  // Hover/focus state
-  @include hover-focus {
-    color: $carousel-control-color;
-    text-decoration: none;
-    outline: 0;
-    opacity: $carousel-control-hover-opacity;
-  }
-}
-.carousel-control-prev {
-  left: 0;
-  @if $enable-gradients {
-    background: linear-gradient(90deg, rgba($black, .25), rgba($black, .001));
-  }
-}
-.carousel-control-next {
-  right: 0;
-  @if $enable-gradients {
-    background: linear-gradient(270deg, rgba($black, .25), rgba($black, .001));
-  }
-}
-
-// Icons for within
-.carousel-control-prev-icon,
-.carousel-control-next-icon {
-  display: inline-block;
-  width: $carousel-control-icon-width;
-  height: $carousel-control-icon-width;
-  background: transparent no-repeat center center;
-  background-size: 100% 100%;
-}
-.carousel-control-prev-icon {
-  background-image: $carousel-control-prev-icon-bg;
-}
-.carousel-control-next-icon {
-  background-image: $carousel-control-next-icon-bg;
-}
-
-
-// Optional indicator pips
-//
-// Add an ordered list with the following class and add a list item for each
-// slide your carousel holds.
-
-.carousel-indicators {
-  position: absolute;
-  right: 0;
-  bottom: 0;
-  left: 0;
-  z-index: 15;
-  display: flex;
-  justify-content: center;
-  padding-left: 0; // override <ol> default
-  // Use the .carousel-control's width as margin so we don't overlay those
-  margin-right: $carousel-control-width;
-  margin-left: $carousel-control-width;
-  list-style: none;
-
-  li {
-    box-sizing: content-box;
-    flex: 0 1 auto;
-    width: $carousel-indicator-width;
-    height: $carousel-indicator-height;
-    margin-right: $carousel-indicator-spacer;
-    margin-left: $carousel-indicator-spacer;
-    text-indent: -999px;
-    cursor: pointer;
-    background-color: $carousel-indicator-active-bg;
-    background-clip: padding-box;
-    // Use transparent borders to increase the hit area by 10px on top and bottom.
-    border-top: $carousel-indicator-hit-area-height solid transparent;
-    border-bottom: $carousel-indicator-hit-area-height solid transparent;
-    opacity: .5;
-    @include transition($carousel-indicator-transition);
-  }
-
-  .active {
-    opacity: 1;
-  }
-}
-
-
-// Optional captions
-//
-//
-
-.carousel-caption {
-  position: absolute;
-  right: ((100% - $carousel-caption-width) / 2);
-  bottom: 20px;
-  left: ((100% - $carousel-caption-width) / 2);
-  z-index: 10;
-  padding-top: 20px;
-  padding-bottom: 20px;
-  color: $carousel-caption-color;
-  text-align: center;
-}
diff --git a/scss/bootstrap/_close.scss b/scss/bootstrap/_close.scss
deleted file mode 100644
index 821922f4c4..0000000000
--- a/scss/bootstrap/_close.scss
+++ /dev/null
@@ -1,44 +0,0 @@
-.close {
-  float: right;
-  font-size: $close-font-size;
-  font-weight: $close-font-weight;
-  line-height: 1;
-  color: $close-color;
-  text-shadow: $close-text-shadow;
-  opacity: .5;
-
-  // Override <a>'s hover style
-  @include hover {
-    color: $close-color;
-    text-decoration: none;
-  }
-
-  &:not(:disabled):not(.disabled) {
-    @include hover-focus {
-      opacity: .75;
-    }
-
-    // Opinionated: add "hand" cursor to non-disabled .close elements
-    cursor: pointer;
-  }
-}
-
-// Additional properties for button version
-// iOS requires the button element instead of an anchor tag.
-// If you want the anchor version, it requires `href="#"`.
-// See https://developer.mozilla.org/en-US/docs/Web/Events/click#Safari_Mobile
-
-// stylelint-disable-next-line selector-no-qualifying-type
-button.close {
-  padding: 0;
-  background-color: transparent;
-  border: 0;
-  appearance: none;
-}
-
-// Future-proof disabling of clicks on `<a>` elements
-
-// stylelint-disable-next-line selector-no-qualifying-type
-a.close.disabled {
-  pointer-events: none;
-}
diff --git a/scss/bootstrap/_code.scss b/scss/bootstrap/_code.scss
deleted file mode 100644
index 9b2e027f40..0000000000
--- a/scss/bootstrap/_code.scss
+++ /dev/null
@@ -1,48 +0,0 @@
-// Inline code
-code {
-  font-size: $code-font-size;
-  color: $code-color;
-  word-break: break-word;
-
-  // Streamline the style when inside anchors to avoid broken underline and more
-  a > & {
-    color: inherit;
-  }
-}
-
-// User input typically entered via keyboard
-kbd {
-  padding: $kbd-padding-y $kbd-padding-x;
-  font-size: $kbd-font-size;
-  color: $kbd-color;
-  background-color: $kbd-bg;
-  @include border-radius($border-radius-sm);
-  @include box-shadow($kbd-box-shadow);
-
-  kbd {
-    padding: 0;
-    font-size: 100%;
-    font-weight: $nested-kbd-font-weight;
-    @include box-shadow(none);
-  }
-}
-
-// Blocks of code
-pre {
-  display: block;
-  font-size: $code-font-size;
-  color: $pre-color;
-
-  // Account for some code outputs that place code tags in pre tags
-  code {
-    font-size: inherit;
-    color: inherit;
-    word-break: normal;
-  }
-}
-
-// Enable scrollable blocks of code
-.pre-scrollable {
-  max-height: $pre-scrollable-max-height;
-  overflow-y: scroll;
-}
diff --git a/scss/bootstrap/_custom-forms.scss b/scss/bootstrap/_custom-forms.scss
deleted file mode 100644
index e999daf0ca..0000000000
--- a/scss/bootstrap/_custom-forms.scss
+++ /dev/null
@@ -1,466 +0,0 @@
-// Embedded icons from Open Iconic.
-// Released under MIT and copyright 2014 Waybury.
-// https://useiconic.com/open
-
-
-// Checkboxes and radios
-//
-// Base class takes care of all the key behavioral aspects.
-
-.custom-control {
-  position: relative;
-  display: block;
-  min-height: ($font-size-base * $line-height-base);
-  padding-left: $custom-control-gutter;
-}
-
-.custom-control-inline {
-  display: inline-flex;
-  margin-right: $custom-control-spacer-x;
-}
-
-.custom-control-input {
-  position: absolute;
-  z-index: -1; // Put the input behind the label so it doesn't overlay text
-  opacity: 0;
-
-  &:checked ~ .custom-control-label::before {
-    color: $custom-control-indicator-checked-color;
-    border-color: $custom-control-indicator-checked-border-color;
-    @include gradient-bg($custom-control-indicator-checked-bg);
-    @include box-shadow($custom-control-indicator-checked-box-shadow);
-  }
-
-  &:focus ~ .custom-control-label::before {
-    // the mixin is not used here to make sure there is feedback
-    @if $enable-shadows {
-      box-shadow: $input-box-shadow, $input-focus-box-shadow;
-    } @else {
-      box-shadow: $custom-control-indicator-focus-box-shadow;
-    }
-  }
-
-  &:focus:not(:checked) ~ .custom-control-label::before {
-    border-color: $custom-control-indicator-focus-border-color;
-  }
-
-  &:not(:disabled):active ~ .custom-control-label::before {
-    color: $custom-control-indicator-active-color;
-    background-color: $custom-control-indicator-active-bg;
-    border-color: $custom-control-indicator-active-border-color;
-    @include box-shadow($custom-control-indicator-active-box-shadow);
-  }
-
-  &:disabled {
-    ~ .custom-control-label {
-      color: $custom-control-label-disabled-color;
-
-      &::before {
-        background-color: $custom-control-indicator-disabled-bg;
-      }
-    }
-  }
-}
-
-// Custom control indicators
-//
-// Build the custom controls out of pseudo-elements.
-
-.custom-control-label {
-  position: relative;
-  margin-bottom: 0;
-  vertical-align: top;
-
-  // Background-color and (when enabled) gradient
-  &::before {
-    position: absolute;
-    top: (($font-size-base * $line-height-base - $custom-control-indicator-size) / 2);
-    left: -$custom-control-gutter;
-    display: block;
-    width: $custom-control-indicator-size;
-    height: $custom-control-indicator-size;
-    pointer-events: none;
-    content: "";
-    background-color: $custom-control-indicator-bg;
-    border: $custom-control-indicator-border-color solid $custom-control-indicator-border-width;
-    @include box-shadow($custom-control-indicator-box-shadow);
-  }
-
-  // Foreground (icon)
-  &::after {
-    position: absolute;
-    top: (($font-size-base * $line-height-base - $custom-control-indicator-size) / 2);
-    left: -$custom-control-gutter;
-    display: block;
-    width: $custom-control-indicator-size;
-    height: $custom-control-indicator-size;
-    content: "";
-    background-repeat: no-repeat;
-    background-position: center center;
-    background-size: $custom-control-indicator-bg-size;
-  }
-}
-
-
-// Checkboxes
-//
-// Tweak just a few things for checkboxes.
-
-.custom-checkbox {
-  .custom-control-label::before {
-    @include border-radius($custom-checkbox-indicator-border-radius);
-  }
-
-  .custom-control-input:checked ~ .custom-control-label {
-    &::after {
-      background-image: $custom-checkbox-indicator-icon-checked;
-    }
-  }
-
-  .custom-control-input:indeterminate ~ .custom-control-label {
-    &::before {
-      border-color: $custom-checkbox-indicator-indeterminate-border-color;
-      @include gradient-bg($custom-checkbox-indicator-indeterminate-bg);
-      @include box-shadow($custom-checkbox-indicator-indeterminate-box-shadow);
-    }
-    &::after {
-      background-image: $custom-checkbox-indicator-icon-indeterminate;
-    }
-  }
-
-  .custom-control-input:disabled {
-    &:checked ~ .custom-control-label::before {
-      background-color: $custom-control-indicator-checked-disabled-bg;
-    }
-    &:indeterminate ~ .custom-control-label::before {
-      background-color: $custom-control-indicator-checked-disabled-bg;
-    }
-  }
-}
-
-// Radios
-//
-// Tweak just a few things for radios.
-
-.custom-radio {
-  .custom-control-label::before {
-    border-radius: $custom-radio-indicator-border-radius;
-  }
-
-  .custom-control-input:checked ~ .custom-control-label {
-    &::after {
-      background-image: $custom-radio-indicator-icon-checked;
-    }
-  }
-
-  .custom-control-input:disabled {
-    &:checked ~ .custom-control-label::before {
-      background-color: $custom-control-indicator-checked-disabled-bg;
-    }
-  }
-}
-
-
-// Select
-//
-// Replaces the browser default select with a custom one, mostly pulled from
-// https://primer.github.io/.
-//
-
-.custom-select {
-  display: inline-block;
-  width: 100%;
-  height: $custom-select-height;
-  padding: $custom-select-padding-y ($custom-select-padding-x + $custom-select-indicator-padding) $custom-select-padding-y $custom-select-padding-x;
-  font-weight: $custom-select-font-weight;
-  line-height: $custom-select-line-height;
-  color: $custom-select-color;
-  vertical-align: middle;
-  background: $custom-select-background;
-  background-color: $custom-select-bg;
-  border: $custom-select-border-width solid $custom-select-border-color;
-  @if $enable-rounded {
-    border-radius: $custom-select-border-radius;
-  } @else {
-    border-radius: 0;
-  }
-  @include box-shadow($custom-select-box-shadow);
-  appearance: none;
-
-  &:focus {
-    border-color: $custom-select-focus-border-color;
-    outline: 0;
-    @if $enable-shadows {
-      box-shadow: $custom-select-box-shadow, $custom-select-focus-box-shadow;
-    } @else {
-      box-shadow: $custom-select-focus-box-shadow;
-    }
-
-    &::-ms-value {
-      // For visual consistency with other platforms/browsers,
-      // suppress the default white text on blue background highlight given to
-      // the selected option text when the (still closed) <select> receives focus
-      // in IE and (under certain conditions) Edge.
-      // See https://github.com/twbs/bootstrap/issues/19398.
-      color: $input-color;
-      background-color: $input-bg;
-    }
-  }
-
-  &[multiple],
-  &[size]:not([size="1"]) {
-    height: auto;
-    padding-right: $custom-select-padding-x;
-    background-image: none;
-  }
-
-  &:disabled {
-    color: $custom-select-disabled-color;
-    background-color: $custom-select-disabled-bg;
-  }
-
-  // Hides the default caret in IE11
-  &::-ms-expand {
-    opacity: 0;
-  }
-}
-
-.custom-select-sm {
-  height: $custom-select-height-sm;
-  padding-top: $custom-select-padding-y-sm;
-  padding-bottom: $custom-select-padding-y-sm;
-  padding-left: $custom-select-padding-x-sm;
-  font-size: $custom-select-font-size-sm;
-}
-
-.custom-select-lg {
-  height: $custom-select-height-lg;
-  padding-top: $custom-select-padding-y-lg;
-  padding-bottom: $custom-select-padding-y-lg;
-  padding-left: $custom-select-padding-x-lg;
-  font-size: $custom-select-font-size-lg;
-}
-
-
-// File
-//
-// Custom file input.
-
-.custom-file {
-  position: relative;
-  display: inline-block;
-  width: 100%;
-  height: $custom-file-height;
-  margin-bottom: 0;
-}
-
-.custom-file-input {
-  position: relative;
-  z-index: 2;
-  width: 100%;
-  height: $custom-file-height;
-  margin: 0;
-  opacity: 0;
-
-  &:focus ~ .custom-file-label {
-    border-color: $custom-file-focus-border-color;
-    box-shadow: $custom-file-focus-box-shadow;
-  }
-
-  &:disabled ~ .custom-file-label {
-    background-color: $custom-file-disabled-bg;
-  }
-
-  @each $lang, $value in $custom-file-text {
-    &:lang(#{$lang}) ~ .custom-file-label::after {
-      content: $value;
-    }
-  }
-
-  ~ .custom-file-label[data-browse]::after {
-    content: attr(data-browse);
-  }
-}
-
-.custom-file-label {
-  position: absolute;
-  top: 0;
-  right: 0;
-  left: 0;
-  z-index: 1;
-  height: $custom-file-height;
-  padding: $custom-file-padding-y $custom-file-padding-x;
-  font-weight: $custom-file-font-weight;
-  line-height: $custom-file-line-height;
-  color: $custom-file-color;
-  background-color: $custom-file-bg;
-  border: $custom-file-border-width solid $custom-file-border-color;
-  @include border-radius($custom-file-border-radius);
-  @include box-shadow($custom-file-box-shadow);
-
-  &::after {
-    position: absolute;
-    top: 0;
-    right: 0;
-    bottom: 0;
-    z-index: 3;
-    display: block;
-    height: $custom-file-height-inner;
-    padding: $custom-file-padding-y $custom-file-padding-x;
-    line-height: $custom-file-line-height;
-    color: $custom-file-button-color;
-    content: "Browse";
-    @include gradient-bg($custom-file-button-bg);
-    border-left: inherit;
-    @include border-radius(0 $custom-file-border-radius $custom-file-border-radius 0);
-  }
-}
-
-// Range
-//
-// Style range inputs the same across browsers. Vendor-specific rules for pseudo
-// elements cannot be mixed. As such, there are no shared styles for focus or
-// active states on prefixed selectors.
-
-.custom-range {
-  width: 100%;
-  height: calc(#{$custom-range-thumb-height} + #{$custom-range-thumb-focus-box-shadow-width * 2});
-  padding: 0; // Need to reset padding
-  background-color: transparent;
-  appearance: none;
-
-  &:focus {
-    outline: none;
-
-    // Pseudo-elements must be split across multiple rulesets to have an effect.
-    // No box-shadow() mixin for focus accessibility.
-    &::-webkit-slider-thumb { box-shadow: $custom-range-thumb-focus-box-shadow; }
-    &::-moz-range-thumb     { box-shadow: $custom-range-thumb-focus-box-shadow; }
-    &::-ms-thumb            { box-shadow: $custom-range-thumb-focus-box-shadow; }
-  }
-
-  &::-moz-focus-outer {
-    border: 0;
-  }
-
-  &::-webkit-slider-thumb {
-    width: $custom-range-thumb-width;
-    height: $custom-range-thumb-height;
-    margin-top: (($custom-range-track-height - $custom-range-thumb-height) / 2); // Webkit specific
-    @include gradient-bg($custom-range-thumb-bg);
-    border: $custom-range-thumb-border;
-    @include border-radius($custom-range-thumb-border-radius);
-    @include box-shadow($custom-range-thumb-box-shadow);
-    @include transition($custom-forms-transition);
-    appearance: none;
-
-    &:active {
-      @include gradient-bg($custom-range-thumb-active-bg);
-    }
-  }
-
-  &::-webkit-slider-runnable-track {
-    width: $custom-range-track-width;
-    height: $custom-range-track-height;
-    color: transparent; // Why?
-    cursor: $custom-range-track-cursor;
-    background-color: $custom-range-track-bg;
-    border-color: transparent;
-    @include border-radius($custom-range-track-border-radius);
-    @include box-shadow($custom-range-track-box-shadow);
-  }
-
-  &::-moz-range-thumb {
-    width: $custom-range-thumb-width;
-    height: $custom-range-thumb-height;
-    @include gradient-bg($custom-range-thumb-bg);
-    border: $custom-range-thumb-border;
-    @include border-radius($custom-range-thumb-border-radius);
-    @include box-shadow($custom-range-thumb-box-shadow);
-    @include transition($custom-forms-transition);
-    appearance: none;
-
-    &:active {
-      @include gradient-bg($custom-range-thumb-active-bg);
-    }
-  }
-
-  &::-moz-range-track {
-    width: $custom-range-track-width;
-    height: $custom-range-track-height;
-    color: transparent;
-    cursor: $custom-range-track-cursor;
-    background-color: $custom-range-track-bg;
-    border-color: transparent; // Firefox specific?
-    @include border-radius($custom-range-track-border-radius);
-    @include box-shadow($custom-range-track-box-shadow);
-  }
-
-  &::-ms-thumb {
-    width: $custom-range-thumb-width;
-    height: $custom-range-thumb-height;
-    margin-top: 0; // Edge specific
-    margin-right: $custom-range-thumb-focus-box-shadow-width; // Workaround that overflowed box-shadow is hidden.
-    margin-left: $custom-range-thumb-focus-box-shadow-width;  // Workaround that overflowed box-shadow is hidden.
-    @include gradient-bg($custom-range-thumb-bg);
-    border: $custom-range-thumb-border;
-    @include border-radius($custom-range-thumb-border-radius);
-    @include box-shadow($custom-range-thumb-box-shadow);
-    @include transition($custom-forms-transition);
-    appearance: none;
-
-    &:active {
-      @include gradient-bg($custom-range-thumb-active-bg);
-    }
-  }
-
-  &::-ms-track {
-    width: $custom-range-track-width;
-    height: $custom-range-track-height;
-    color: transparent;
-    cursor: $custom-range-track-cursor;
-    background-color: transparent;
-    border-color: transparent;
-    border-width: ($custom-range-thumb-height * .5);
-    @include box-shadow($custom-range-track-box-shadow);
-  }
-
-  &::-ms-fill-lower {
-    background-color: $custom-range-track-bg;
-    @include border-radius($custom-range-track-border-radius);
-  }
-
-  &::-ms-fill-upper {
-    margin-right: 15px; // arbitrary?
-    background-color: $custom-range-track-bg;
-    @include border-radius($custom-range-track-border-radius);
-  }
-
-  &:disabled {
-    &::-webkit-slider-thumb {
-      background-color: $custom-range-thumb-disabled-bg;
-    }
-
-    &::-webkit-slider-runnable-track {
-      cursor: default;
-    }
-
-    &::-moz-range-thumb {
-      background-color: $custom-range-thumb-disabled-bg;
-    }
-
-    &::-moz-range-track {
-      cursor: default;
-    }
-
-    &::-ms-thumb {
-      background-color: $custom-range-thumb-disabled-bg;
-    }
-  }
-}
-
-.custom-control-label::before,
-.custom-file-label,
-.custom-select {
-  @include transition($custom-forms-transition);
-}
diff --git a/scss/bootstrap/_dropdown.scss b/scss/bootstrap/_dropdown.scss
deleted file mode 100644
index 93c1d78e95..0000000000
--- a/scss/bootstrap/_dropdown.scss
+++ /dev/null
@@ -1,191 +0,0 @@
-// The dropdown wrapper (`<div>`)
-.dropup,
-.dropright,
-.dropdown,
-.dropleft {
-  position: relative;
-}
-
-.dropdown-toggle {
-  // Generate the caret automatically
-  @include caret;
-}
-
-// The dropdown menu
-.dropdown-menu {
-  position: absolute;
-  top: 100%;
-  left: 0;
-  z-index: $zindex-dropdown;
-  display: none; // none by default, but block on "open" of the menu
-  float: left;
-  min-width: $dropdown-min-width;
-  padding: $dropdown-padding-y 0;
-  margin: $dropdown-spacer 0 0; // override default ul
-  font-size: $font-size-base; // Redeclare because nesting can cause inheritance issues
-  color: $body-color;
-  text-align: left; // Ensures proper alignment if parent has it changed (e.g., modal footer)
-  list-style: none;
-  background-color: $dropdown-bg;
-  background-clip: padding-box;
-  border: $dropdown-border-width solid $dropdown-border-color;
-  @include border-radius($dropdown-border-radius);
-  @include box-shadow($dropdown-box-shadow);
-}
-
-@each $breakpoint in map-keys($grid-breakpoints) {
-  @include media-breakpoint-up($breakpoint) {
-    $infix: breakpoint-infix($breakpoint, $grid-breakpoints);
-
-    .dropdown-menu#{$infix}-right {
-      right: 0;
-      left: auto;
-    }
-  }
-}
-
-@each $breakpoint in map-keys($grid-breakpoints) {
-  @include media-breakpoint-up($breakpoint) {
-    $infix: breakpoint-infix($breakpoint, $grid-breakpoints);
-
-    .dropdown-menu#{$infix}-left {
-      right: auto;
-      left: 0;
-    }
-  }
-}
-
-// Allow for dropdowns to go bottom up (aka, dropup-menu)
-// Just add .dropup after the standard .dropdown class and you're set.
-.dropup {
-  .dropdown-menu {
-    top: auto;
-    bottom: 100%;
-    margin-top: 0;
-    margin-bottom: $dropdown-spacer;
-  }
-
-  .dropdown-toggle {
-    @include caret(up);
-  }
-}
-
-.dropright {
-  .dropdown-menu {
-    top: 0;
-    right: auto;
-    left: 100%;
-    margin-top: 0;
-    margin-left: $dropdown-spacer;
-  }
-
-  .dropdown-toggle {
-    @include caret(right);
-    &::after {
-      vertical-align: 0;
-    }
-  }
-}
-
-.dropleft {
-  .dropdown-menu {
-    top: 0;
-    right: 100%;
-    left: auto;
-    margin-top: 0;
-    margin-right: $dropdown-spacer;
-  }
-
-  .dropdown-toggle {
-    @include caret(left);
-    &::before {
-      vertical-align: 0;
-    }
-  }
-}
-
-// When enabled Popper.js, reset basic dropdown position
-// stylelint-disable-next-line no-duplicate-selectors
-.dropdown-menu {
-  &[x-placement^="top"],
-  &[x-placement^="right"],
-  &[x-placement^="bottom"],
-  &[x-placement^="left"] {
-    right: auto;
-    bottom: auto;
-  }
-}
-
-// Dividers (basically an `<hr>`) within the dropdown
-.dropdown-divider {
-  @include nav-divider($dropdown-divider-bg);
-}
-
-// Links, buttons, and more within the dropdown menu
-//
-// `<button>`-specific styles are denoted with `// For <button>s`
-.dropdown-item {
-  display: block;
-  width: 100%; // For `<button>`s
-  padding: $dropdown-item-padding-y $dropdown-item-padding-x;
-  clear: both;
-  font-weight: $font-weight-normal;
-  color: $dropdown-link-color;
-  text-align: inherit; // For `<button>`s
-  white-space: nowrap; // prevent links from randomly breaking onto new lines
-  background-color: transparent; // For `<button>`s
-  border: 0; // For `<button>`s
-
-  &:first-child {
-    @include border-top-radius($dropdown-inner-border-radius);
-  }
-
-  &:last-child {
-    @include border-bottom-radius($dropdown-inner-border-radius);
-  }
-
-  @include hover-focus {
-    color: $dropdown-link-hover-color;
-    text-decoration: none;
-    @include gradient-bg($dropdown-link-hover-bg);
-  }
-
-  &.active,
-  &:active {
-    color: $dropdown-link-active-color;
-    text-decoration: none;
-    @include gradient-bg($dropdown-link-active-bg);
-  }
-
-  &.disabled,
-  &:disabled {
-    color: $dropdown-link-disabled-color;
-    pointer-events: none;
-    background-color: transparent;
-    // Remove CSS gradients if they're enabled
-    @if $enable-gradients {
-      background-image: none;
-    }
-  }
-}
-
-.dropdown-menu.show {
-  display: block;
-}
-
-// Dropdown section headers
-.dropdown-header {
-  display: block;
-  padding: $dropdown-padding-y $dropdown-item-padding-x;
-  margin-bottom: 0; // for use with heading elements
-  font-size: $font-size-sm;
-  color: $dropdown-header-color;
-  white-space: nowrap; // as with > li > a
-}
-
-// Dropdown text
-.dropdown-item-text {
-  display: block;
-  padding: $dropdown-item-padding-y $dropdown-item-padding-x;
-  color: $dropdown-link-color;
-}
diff --git a/scss/bootstrap/_forms.scss b/scss/bootstrap/_forms.scss
deleted file mode 100644
index a83e04d657..0000000000
--- a/scss/bootstrap/_forms.scss
+++ /dev/null
@@ -1,334 +0,0 @@
-// stylelint-disable selector-no-qualifying-type
-
-//
-// Textual form controls
-//
-
-.form-control {
-  display: block;
-  width: 100%;
-  height: $input-height;
-  padding: $input-padding-y $input-padding-x;
-  font-size: $input-font-size;
-  font-weight: $input-font-weight;
-  line-height: $input-line-height;
-  color: $input-color;
-  background-color: $input-bg;
-  background-clip: padding-box;
-  border: $input-border-width solid $input-border-color;
-
-  // Note: This has no effect on <select>s in some browsers, due to the limited stylability of `<select>`s in CSS.
-  @if $enable-rounded {
-    // Manually use the if/else instead of the mixin to account for iOS override
-    border-radius: $input-border-radius;
-  } @else {
-    // Otherwise undo the iOS default
-    border-radius: 0;
-  }
-
-  @include box-shadow($input-box-shadow);
-  @include transition($input-transition);
-
-  // Unstyle the caret on `<select>`s in IE10+.
-  &::-ms-expand {
-    background-color: transparent;
-    border: 0;
-  }
-
-  // Customize the `:focus` state to imitate native WebKit styles.
-  @include form-control-focus();
-
-  // Placeholder
-  &::placeholder {
-    color: $input-placeholder-color;
-    // Override Firefox's unusual default opacity; see https://github.com/twbs/bootstrap/pull/11526.
-    opacity: 1;
-  }
-
-  // Disabled and read-only inputs
-  //
-  // HTML5 says that controls under a fieldset > legend:first-child won't be
-  // disabled if the fieldset is disabled. Due to implementation difficulty, we
-  // don't honor that edge case; we style them as disabled anyway.
-  &:disabled,
-  &[readonly] {
-    background-color: $input-disabled-bg;
-    // iOS fix for unreadable disabled content; see https://github.com/twbs/bootstrap/issues/11655.
-    opacity: 1;
-  }
-}
-
-select.form-control {
-  &:focus::-ms-value {
-    // Suppress the nested default white text on blue background highlight given to
-    // the selected option text when the (still closed) <select> receives focus
-    // in IE and (under certain conditions) Edge, as it looks bad and cannot be made to
-    // match the appearance of the native widget.
-    // See https://github.com/twbs/bootstrap/issues/19398.
-    color: $input-color;
-    background-color: $input-bg;
-  }
-}
-
-// Make file inputs better match text inputs by forcing them to new lines.
-.form-control-file,
-.form-control-range {
-  display: block;
-  width: 100%;
-}
-
-
-//
-// Labels
-//
-
-// For use with horizontal and inline forms, when you need the label (or legend)
-// text to align with the form controls.
-.col-form-label {
-  padding-top: calc(#{$input-padding-y} + #{$input-border-width});
-  padding-bottom: calc(#{$input-padding-y} + #{$input-border-width});
-  margin-bottom: 0; // Override the `<label>/<legend>` default
-  font-size: inherit; // Override the `<legend>` default
-  line-height: $input-line-height;
-}
-
-.col-form-label-lg {
-  padding-top: calc(#{$input-padding-y-lg} + #{$input-border-width});
-  padding-bottom: calc(#{$input-padding-y-lg} + #{$input-border-width});
-  font-size: $input-font-size-lg;
-  line-height: $input-line-height-lg;
-}
-
-.col-form-label-sm {
-  padding-top: calc(#{$input-padding-y-sm} + #{$input-border-width});
-  padding-bottom: calc(#{$input-padding-y-sm} + #{$input-border-width});
-  font-size: $input-font-size-sm;
-  line-height: $input-line-height-sm;
-}
-
-
-// Readonly controls as plain text
-//
-// Apply class to a readonly input to make it appear like regular plain
-// text (without any border, background color, focus indicator)
-
-.form-control-plaintext {
-  display: block;
-  width: 100%;
-  padding-top: $input-padding-y;
-  padding-bottom: $input-padding-y;
-  margin-bottom: 0; // match inputs if this class comes on inputs with default margins
-  line-height: $input-line-height;
-  color: $input-plaintext-color;
-  background-color: transparent;
-  border: solid transparent;
-  border-width: $input-border-width 0;
-
-  &.form-control-sm,
-  &.form-control-lg {
-    padding-right: 0;
-    padding-left: 0;
-  }
-}
-
-
-// Form control sizing
-//
-// Build on `.form-control` with modifier classes to decrease or increase the
-// height and font-size of form controls.
-//
-// Repeated in `_input_group.scss` to avoid Sass extend issues.
-
-.form-control-sm {
-  height: $input-height-sm;
-  padding: $input-padding-y-sm $input-padding-x-sm;
-  font-size: $input-font-size-sm;
-  line-height: $input-line-height-sm;
-  @include border-radius($input-border-radius-sm);
-}
-
-.form-control-lg {
-  height: $input-height-lg;
-  padding: $input-padding-y-lg $input-padding-x-lg;
-  font-size: $input-font-size-lg;
-  line-height: $input-line-height-lg;
-  @include border-radius($input-border-radius-lg);
-}
-
-// stylelint-disable-next-line no-duplicate-selectors
-select.form-control {
-  &[size],
-  &[multiple] {
-    height: auto;
-  }
-}
-
-// stylelint-disable-next-line no-duplicate-selectors
-textarea.form-control {
-  height: auto;
-}
-
-// Form groups
-//
-// Designed to help with the organization and spacing of vertical forms. For
-// horizontal forms, use the predefined grid classes.
-
-.form-group {
-  margin-bottom: $form-group-margin-bottom;
-}
-
-.form-text {
-  display: block;
-  margin-top: $form-text-margin-top;
-}
-
-
-// Form grid
-//
-// Special replacement for our grid system's `.row` for tighter form layouts.
-
-.form-row {
-  display: flex;
-  flex-wrap: wrap;
-  margin-right: -5px;
-  margin-left: -5px;
-
-  > .col,
-  > [class*="col-"] {
-    padding-right: 5px;
-    padding-left: 5px;
-  }
-}
-
-
-// Checkboxes and radios
-//
-// Indent the labels to position radios/checkboxes as hanging controls.
-
-.form-check {
-  position: relative;
-  display: block;
-  padding-left: $form-check-input-gutter;
-}
-
-.form-check-input {
-  position: absolute;
-  margin-top: $form-check-input-margin-y;
-  margin-left: -$form-check-input-gutter;
-
-  &:disabled ~ .form-check-label {
-    color: $text-muted;
-  }
-}
-
-.form-check-label {
-  margin-bottom: 0; // Override default `<label>` bottom margin
-}
-
-.form-check-inline {
-  display: inline-flex;
-  align-items: center;
-  padding-left: 0; // Override base .form-check
-  margin-right: $form-check-inline-margin-x;
-
-  // Undo .form-check-input defaults and add some `margin-right`.
-  .form-check-input {
-    position: static;
-    margin-top: 0;
-    margin-right: $form-check-inline-input-margin-x;
-    margin-left: 0;
-  }
-}
-
-
-// Form validation
-//
-// Provide feedback to users when form field values are valid or invalid. Works
-// primarily for client-side validation via scoped `:invalid` and `:valid`
-// pseudo-classes but also includes `.is-invalid` and `.is-valid` classes for
-// server side validation.
-
-@include form-validation-state("valid", $form-feedback-valid-color);
-@include form-validation-state("invalid", $form-feedback-invalid-color);
-
-// Inline forms
-//
-// Make forms appear inline(-block) by adding the `.form-inline` class. Inline
-// forms begin stacked on extra small (mobile) devices and then go inline when
-// viewports reach <768px.
-//
-// Requires wrapping inputs and labels with `.form-group` for proper display of
-// default HTML form controls and our custom form controls (e.g., input groups).
-
-.form-inline {
-  display: flex;
-  flex-flow: row wrap;
-  align-items: center; // Prevent shorter elements from growing to same height as others (e.g., small buttons growing to normal sized button height)
-
-  // Because we use flex, the initial sizing of checkboxes is collapsed and
-  // doesn't occupy the full-width (which is what we want for xs grid tier),
-  // so we force that here.
-  .form-check {
-    width: 100%;
-  }
-
-  // Kick in the inline
-  @include media-breakpoint-up(sm) {
-    label {
-      display: flex;
-      align-items: center;
-      justify-content: center;
-      margin-bottom: 0;
-    }
-
-    // Inline-block all the things for "inline"
-    .form-group {
-      display: flex;
-      flex: 0 0 auto;
-      flex-flow: row wrap;
-      align-items: center;
-      margin-bottom: 0;
-    }
-
-    // Allow folks to *not* use `.form-group`
-    .form-control {
-      display: inline-block;
-      width: auto; // Prevent labels from stacking above inputs in `.form-group`
-      vertical-align: middle;
-    }
-
-    // Make static controls behave like regular ones
-    .form-control-plaintext {
-      display: inline-block;
-    }
-
-    .input-group,
-    .custom-select {
-      width: auto;
-    }
-
-    // Remove default margin on radios/checkboxes that were used for stacking, and
-    // then undo the floating of radios and checkboxes to match.
-    .form-check {
-      display: flex;
-      align-items: center;
-      justify-content: center;
-      width: auto;
-      padding-left: 0;
-    }
-    .form-check-input {
-      position: relative;
-      margin-top: 0;
-      margin-right: $form-check-input-margin-x;
-      margin-left: 0;
-    }
-
-    .custom-control {
-      align-items: center;
-      justify-content: center;
-    }
-    .custom-control-label {
-      margin-bottom: 0;
-    }
-  }
-}
diff --git a/scss/bootstrap/_functions.scss b/scss/bootstrap/_functions.scss
deleted file mode 100644
index 77b8c8f104..0000000000
--- a/scss/bootstrap/_functions.scss
+++ /dev/null
@@ -1,86 +0,0 @@
-// Bootstrap functions
-//
-// Utility mixins and functions for evaluating source code across our variables, maps, and mixins.
-
-// Ascending
-// Used to evaluate Sass maps like our grid breakpoints.
-@mixin _assert-ascending($map, $map-name) {
-  $prev-key: null;
-  $prev-num: null;
-  @each $key, $num in $map {
-    @if $prev-num == null or unit($num) == "%" {
-      // Do nothing
-    } @else if not comparable($prev-num, $num) {
-      @warn "Potentially invalid value for #{$map-name}: This map must be in ascending order, but key '#{$key}' has value #{$num} whose unit makes it incomparable to #{$prev-num}, the value of the previous key '#{$prev-key}' !";
-    } @else if $prev-num >= $num {
-      @warn "Invalid value for #{$map-name}: This map must be in ascending order, but key '#{$key}' has value #{$num} which isn't greater than #{$prev-num}, the value of the previous key '#{$prev-key}' !";
-    }
-    $prev-key: $key;
-    $prev-num: $num;
-  }
-}
-
-// Starts at zero
-// Another grid mixin that ensures the min-width of the lowest breakpoint starts at 0.
-@mixin _assert-starts-at-zero($map) {
-  $values: map-values($map);
-  $first-value: nth($values, 1);
-  @if $first-value != 0 {
-    @warn "First breakpoint in `$grid-breakpoints` must start at 0, but starts at #{$first-value}.";
-  }
-}
-
-// Replace `$search` with `$replace` in `$string`
-// Used on our SVG icon backgrounds for custom forms.
-//
-// @author Hugo Giraudel
-// @param {String} $string - Initial string
-// @param {String} $search - Substring to replace
-// @param {String} $replace ('') - New value
-// @return {String} - Updated string
-@function str-replace($string, $search, $replace: "") {
-  $index: str-index($string, $search);
-
-  @if $index {
-    @return str-slice($string, 1, $index - 1) + $replace + str-replace(str-slice($string, $index + str-length($search)), $search, $replace);
-  }
-
-  @return $string;
-}
-
-// Color contrast
-@function color-yiq($color, $dark: $yiq-text-dark, $light: $yiq-text-light) {
-  $r: red($color);
-  $g: green($color);
-  $b: blue($color);
-
-  $yiq: (($r * 299) + ($g * 587) + ($b * 114)) / 1000;
-
-  @if ($yiq >= $yiq-contrasted-threshold) {
-    @return $dark;
-  } @else {
-    @return $light;
-  }
-}
-
-// Retrieve color Sass maps
-@function color($key: "blue") {
-  @return map-get($colors, $key);
-}
-
-@function theme-color($key: "primary") {
-  @return map-get($theme-colors, $key);
-}
-
-@function gray($key: "100") {
-  @return map-get($grays, $key);
-}
-
-// Request a theme color level
-@function theme-color-level($color-name: "primary", $level: 0) {
-  $color: theme-color($color-name);
-  $color-base: if($level > 0, $black, $white);
-  $level: abs($level);
-
-  @return mix($color-base, $color, $level * $theme-color-interval);
-}
diff --git a/scss/bootstrap/_grid.scss b/scss/bootstrap/_grid.scss
deleted file mode 100644
index a227515379..0000000000
--- a/scss/bootstrap/_grid.scss
+++ /dev/null
@@ -1,52 +0,0 @@
-// Container widths
-//
-// Set the container width, and override it for fixed navbars in media queries.
-
-@if $enable-grid-classes {
-  .container {
-    @include make-container();
-    @include make-container-max-widths();
-  }
-}
-
-// Fluid container
-//
-// Utilizes the mixin meant for fixed width containers, but with 100% width for
-// fluid, full width layouts.
-
-@if $enable-grid-classes {
-  .container-fluid {
-    @include make-container();
-  }
-}
-
-// Row
-//
-// Rows contain and clear the floats of your columns.
-
-@if $enable-grid-classes {
-  .row {
-    @include make-row();
-  }
-
-  // Remove the negative margin from default .row, then the horizontal padding
-  // from all immediate children columns (to prevent runaway style inheritance).
-  .no-gutters {
-    margin-right: 0;
-    margin-left: 0;
-
-    > .col,
-    > [class*="col-"] {
-      padding-right: 0;
-      padding-left: 0;
-    }
-  }
-}
-
-// Columns
-//
-// Common styles for small and large grid columns
-
-@if $enable-grid-classes {
-  @include make-grid-columns();
-}
diff --git a/scss/bootstrap/_images.scss b/scss/bootstrap/_images.scss
deleted file mode 100644
index 2bce02f631..0000000000
--- a/scss/bootstrap/_images.scss
+++ /dev/null
@@ -1,42 +0,0 @@
-// Responsive images (ensure images don't scale beyond their parents)
-//
-// This is purposefully opt-in via an explicit class rather than being the default for all `<img>`s.
-// We previously tried the "images are responsive by default" approach in Bootstrap v2,
-// and abandoned it in Bootstrap v3 because it breaks lots of third-party widgets (including Google Maps)
-// which weren't expecting the images within themselves to be involuntarily resized.
-// See also https://github.com/twbs/bootstrap/issues/18178
-.img-fluid {
-  @include img-fluid;
-}
-
-
-// Image thumbnails
-.img-thumbnail {
-  padding: $thumbnail-padding;
-  background-color: $thumbnail-bg;
-  border: $thumbnail-border-width solid $thumbnail-border-color;
-  @include border-radius($thumbnail-border-radius);
-  @include box-shadow($thumbnail-box-shadow);
-
-  // Keep them at most 100% wide
-  @include img-fluid;
-}
-
-//
-// Figures
-//
-
-.figure {
-  // Ensures the caption's text aligns with the image.
-  display: inline-block;
-}
-
-.figure-img {
-  margin-bottom: ($spacer / 2);
-  line-height: 1;
-}
-
-.figure-caption {
-  font-size: $figure-caption-font-size;
-  color: $figure-caption-color;
-}
diff --git a/scss/bootstrap/_input-group.scss b/scss/bootstrap/_input-group.scss
deleted file mode 100644
index 6fb8c429b4..0000000000
--- a/scss/bootstrap/_input-group.scss
+++ /dev/null
@@ -1,193 +0,0 @@
-// stylelint-disable selector-no-qualifying-type
-
-//
-// Base styles
-//
-
-.input-group {
-  position: relative;
-  display: flex;
-  flex-wrap: wrap; // For form validation feedback
-  align-items: stretch;
-  width: 100%;
-
-  > .form-control,
-  > .form-control-plaintext,
-  > .custom-select,
-  > .custom-file {
-    position: relative; // For focus state's z-index
-    flex: 1 1 auto;
-    // Add width 1% and flex-basis auto to ensure that button will not wrap out
-    // the column. Applies to IE Edge+ and Firefox. Chrome does not require this.
-    width: 1%;
-    margin-bottom: 0;
-
-    + .form-control,
-    + .custom-select,
-    + .custom-file {
-      margin-left: -$input-border-width;
-    }
-  }
-
-  // Bring the "active" form control to the top of surrounding elements
-  > .form-control:focus,
-  > .custom-select:focus,
-  > .custom-file .custom-file-input:focus ~ .custom-file-label {
-    z-index: 3;
-  }
-
-  // Bring the custom file input above the label
-  > .custom-file .custom-file-input:focus {
-    z-index: 4;
-  }
-
-  > .form-control,
-  > .custom-select {
-    &:not(:last-child) { @include border-right-radius(0); }
-    &:not(:first-child) { @include border-left-radius(0); }
-  }
-
-  // Custom file inputs have more complex markup, thus requiring different
-  // border-radius overrides.
-  > .custom-file {
-    display: flex;
-    align-items: center;
-
-    &:not(:last-child) .custom-file-label,
-    &:not(:last-child) .custom-file-label::after { @include border-right-radius(0); }
-    &:not(:first-child) .custom-file-label { @include border-left-radius(0); }
-  }
-}
-
-
-// Prepend and append
-//
-// While it requires one extra layer of HTML for each, dedicated prepend and
-// append elements allow us to 1) be less clever, 2) simplify our selectors, and
-// 3) support HTML5 form validation.
-
-.input-group-prepend,
-.input-group-append {
-  display: flex;
-
-  // Ensure buttons are always above inputs for more visually pleasing borders.
-  // This isn't needed for `.input-group-text` since it shares the same border-color
-  // as our inputs.
-  .btn {
-    position: relative;
-    z-index: 2;
-
-    &:focus {
-      z-index: 3;
-    }
-  }
-
-  .btn + .btn,
-  .btn + .input-group-text,
-  .input-group-text + .input-group-text,
-  .input-group-text + .btn {
-    margin-left: -$input-border-width;
-  }
-}
-
-.input-group-prepend { margin-right: -$input-border-width; }
-.input-group-append { margin-left: -$input-border-width; }
-
-
-// Textual addons
-//
-// Serves as a catch-all element for any text or radio/checkbox input you wish
-// to prepend or append to an input.
-
-.input-group-text {
-  display: flex;
-  align-items: center;
-  padding: $input-padding-y $input-padding-x;
-  margin-bottom: 0; // Allow use of <label> elements by overriding our default margin-bottom
-  font-size: $font-size-base; // Match inputs
-  font-weight: $font-weight-normal;
-  line-height: $input-line-height;
-  color: $input-group-addon-color;
-  text-align: center;
-  white-space: nowrap;
-  background-color: $input-group-addon-bg;
-  border: $input-border-width solid $input-group-addon-border-color;
-  @include border-radius($input-border-radius);
-
-  // Nuke default margins from checkboxes and radios to vertically center within.
-  input[type="radio"],
-  input[type="checkbox"] {
-    margin-top: 0;
-  }
-}
-
-
-// Sizing
-//
-// Remix the default form control sizing classes into new ones for easier
-// manipulation.
-
-.input-group-lg > .form-control:not(textarea),
-.input-group-lg > .custom-select {
-  height: $input-height-lg;
-}
-
-.input-group-lg > .form-control,
-.input-group-lg > .custom-select,
-.input-group-lg > .input-group-prepend > .input-group-text,
-.input-group-lg > .input-group-append > .input-group-text,
-.input-group-lg > .input-group-prepend > .btn,
-.input-group-lg > .input-group-append > .btn {
-  padding: $input-padding-y-lg $input-padding-x-lg;
-  font-size: $input-font-size-lg;
-  line-height: $input-line-height-lg;
-  @include border-radius($input-border-radius-lg);
-}
-
-.input-group-sm > .form-control:not(textarea),
-.input-group-sm > .custom-select {
-  height: $input-height-sm;
-}
-
-.input-group-sm > .form-control,
-.input-group-sm > .custom-select,
-.input-group-sm > .input-group-prepend > .input-group-text,
-.input-group-sm > .input-group-append > .input-group-text,
-.input-group-sm > .input-group-prepend > .btn,
-.input-group-sm > .input-group-append > .btn {
-  padding: $input-padding-y-sm $input-padding-x-sm;
-  font-size: $input-font-size-sm;
-  line-height: $input-line-height-sm;
-  @include border-radius($input-border-radius-sm);
-}
-
-.input-group-lg > .custom-select,
-.input-group-sm > .custom-select {
-  padding-right: ($custom-select-padding-x + $custom-select-indicator-padding);
-}
-
-
-// Prepend and append rounded corners
-//
-// These rulesets must come after the sizing ones to properly override sm and lg
-// border-radius values when extending. They're more specific than we'd like
-// with the `.input-group >` part, but without it, we cannot override the sizing.
-
-
-.input-group > .input-group-prepend > .btn,
-.input-group > .input-group-prepend > .input-group-text,
-.input-group > .input-group-append:not(:last-child) > .btn,
-.input-group > .input-group-append:not(:last-child) > .input-group-text,
-.input-group > .input-group-append:last-child > .btn:not(:last-child):not(.dropdown-toggle),
-.input-group > .input-group-append:last-child > .input-group-text:not(:last-child) {
-  @include border-right-radius(0);
-}
-
-.input-group > .input-group-append > .btn,
-.input-group > .input-group-append > .input-group-text,
-.input-group > .input-group-prepend:not(:first-child) > .btn,
-.input-group > .input-group-prepend:not(:first-child) > .input-group-text,
-.input-group > .input-group-prepend:first-child > .btn:not(:first-child),
-.input-group > .input-group-prepend:first-child > .input-group-text:not(:first-child) {
-  @include border-left-radius(0);
-}
diff --git a/scss/bootstrap/_jumbotron.scss b/scss/bootstrap/_jumbotron.scss
deleted file mode 100644
index 7966bba1e2..0000000000
--- a/scss/bootstrap/_jumbotron.scss
+++ /dev/null
@@ -1,16 +0,0 @@
-.jumbotron {
-  padding: $jumbotron-padding ($jumbotron-padding / 2);
-  margin-bottom: $jumbotron-padding;
-  background-color: $jumbotron-bg;
-  @include border-radius($border-radius-lg);
-
-  @include media-breakpoint-up(sm) {
-    padding: ($jumbotron-padding * 2) $jumbotron-padding;
-  }
-}
-
-.jumbotron-fluid {
-  padding-right: 0;
-  padding-left: 0;
-  @include border-radius(0);
-}
diff --git a/scss/bootstrap/_list-group.scss b/scss/bootstrap/_list-group.scss
deleted file mode 100644
index 796cc461f4..0000000000
--- a/scss/bootstrap/_list-group.scss
+++ /dev/null
@@ -1,121 +0,0 @@
-// Base class
-//
-// Easily usable on <ul>, <ol>, or <div>.
-
-.list-group {
-  display: flex;
-  flex-direction: column;
-
-  // No need to set list-style: none; since .list-group-item is block level
-  padding-left: 0; // reset padding because ul and ol
-  margin-bottom: 0;
-}
-
-
-// Interactive list items
-//
-// Use anchor or button elements instead of `li`s or `div`s to create interactive
-// list items. Includes an extra `.active` modifier class for selected items.
-
-.list-group-item-action {
-  width: 100%; // For `<button>`s (anchors become 100% by default though)
-  color: $list-group-action-color;
-  text-align: inherit; // For `<button>`s (anchors inherit)
-
-  // Hover state
-  @include hover-focus {
-    color: $list-group-action-hover-color;
-    text-decoration: none;
-    background-color: $list-group-hover-bg;
-  }
-
-  &:active {
-    color: $list-group-action-active-color;
-    background-color: $list-group-action-active-bg;
-  }
-}
-
-
-// Individual list items
-//
-// Use on `li`s or `div`s within the `.list-group` parent.
-
-.list-group-item {
-  position: relative;
-  display: block;
-  padding: $list-group-item-padding-y $list-group-item-padding-x;
-  // Place the border on the list items and negative margin up for better styling
-  margin-bottom: -$list-group-border-width;
-  background-color: $list-group-bg;
-  border: $list-group-border-width solid $list-group-border-color;
-
-  &:first-child {
-    @include border-top-radius($list-group-border-radius);
-  }
-
-  &:last-child {
-    margin-bottom: 0;
-    @include border-bottom-radius($list-group-border-radius);
-  }
-
-  @include hover-focus {
-    z-index: 1; // Place hover/active items above their siblings for proper border styling
-    text-decoration: none;
-  }
-
-  &.disabled,
-  &:disabled {
-    color: $list-group-disabled-color;
-    pointer-events: none;
-    background-color: $list-group-disabled-bg;
-  }
-
-  // Include both here for `<a>`s and `<button>`s
-  &.active {
-    z-index: 2; // Place active items above their siblings for proper border styling
-    color: $list-group-active-color;
-    background-color: $list-group-active-bg;
-    border-color: $list-group-active-border-color;
-  }
-}
-
-
-// Flush list items
-//
-// Remove borders and border-radius to keep list group items edge-to-edge. Most
-// useful within other components (e.g., cards).
-
-.list-group-flush {
-  .list-group-item {
-    border-right: 0;
-    border-left: 0;
-    @include border-radius(0);
-
-    &:last-child {
-      margin-bottom: -$list-group-border-width;
-    }
-  }
-
-  &:first-child {
-    .list-group-item:first-child {
-      border-top: 0;
-    }
-  }
-
-  &:last-child {
-    .list-group-item:last-child {
-      margin-bottom: 0;
-      border-bottom: 0;
-    }
-  }
-}
-
-
-// Contextual variants
-//
-// Add modifier classes to change text and background color on individual items.
-// Organizationally, this must come after the `:hover` states.
-
-@each $color, $value in $theme-colors {
-  @include list-group-item-variant($color, theme-color-level($color, -9), theme-color-level($color, 6));
-}
diff --git a/scss/bootstrap/_media.scss b/scss/bootstrap/_media.scss
deleted file mode 100644
index b573052c14..0000000000
--- a/scss/bootstrap/_media.scss
+++ /dev/null
@@ -1,8 +0,0 @@
-.media {
-  display: flex;
-  align-items: flex-start;
-}
-
-.media-body {
-  flex: 1;
-}
diff --git a/scss/bootstrap/_mixins.scss b/scss/bootstrap/_mixins.scss
deleted file mode 100644
index 8710166660..0000000000
--- a/scss/bootstrap/_mixins.scss
+++ /dev/null
@@ -1,41 +0,0 @@
-// Toggles
-//
-// Used in conjunction with global variables to enable certain theme features.
-
-// Utilities
-@import "mixins/breakpoints";
-@import "mixins/hover";
-@import "mixins/image";
-@import "mixins/badge";
-@import "mixins/resize";
-@import "mixins/screen-reader";
-@import "mixins/size";
-@import "mixins/reset-text";
-@import "mixins/text-emphasis";
-@import "mixins/text-hide";
-@import "mixins/text-truncate";
-@import "mixins/visibility";
-
-// // Components
-@import "mixins/alert";
-@import "mixins/buttons";
-@import "mixins/caret";
-@import "mixins/pagination";
-@import "mixins/lists";
-@import "mixins/list-group";
-@import "mixins/nav-divider";
-@import "mixins/forms";
-@import "mixins/table-row";
-
-// // Skins
-@import "mixins/background-variant";
-@import "mixins/border-radius";
-@import "mixins/box-shadow";
-@import "mixins/gradients";
-@import "mixins/transition";
-
-// // Layout
-@import "mixins/clearfix";
-@import "mixins/grid-framework";
-@import "mixins/grid";
-@import "mixins/float";
diff --git a/scss/bootstrap/_modal.scss b/scss/bootstrap/_modal.scss
deleted file mode 100644
index 65b61d90c2..0000000000
--- a/scss/bootstrap/_modal.scss
+++ /dev/null
@@ -1,186 +0,0 @@
-// .modal-open      - body class for killing the scroll
-// .modal           - container to scroll within
-// .modal-dialog    - positioning shell for the actual modal
-// .modal-content   - actual modal w/ bg and corners and stuff
-
-
-.modal-open {
-  // Kill the scroll on the body
-  overflow: hidden;
-
-  .modal {
-    overflow-x: hidden;
-    overflow-y: auto;
-  }
-}
-
-// Container that the modal scrolls within
-.modal {
-  position: fixed;
-  top: 0;
-  left: 0;
-  z-index: $zindex-modal;
-  display: none;
-  width: 100%;
-  height: 100%;
-  overflow: hidden;
-  // Prevent Chrome on Windows from adding a focus outline. For details, see
-  // https://github.com/twbs/bootstrap/pull/10951.
-  outline: 0;
-  // We deliberately don't use `-webkit-overflow-scrolling: touch;` due to a
-  // gnarly iOS Safari bug: https://bugs.webkit.org/show_bug.cgi?id=158342
-  // See also https://github.com/twbs/bootstrap/issues/17695
-}
-
-// Shell div to position the modal with bottom padding
-.modal-dialog {
-  position: relative;
-  width: auto;
-  margin: $modal-dialog-margin;
-  // allow clicks to pass through for custom click handling to close modal
-  pointer-events: none;
-
-  // When fading in the modal, animate it to slide down
-  .modal.fade & {
-    @include transition($modal-transition);
-    transform: $modal-fade-transform;
-  }
-  .modal.show & {
-    transform: $modal-show-transform;
-  }
-}
-
-.modal-dialog-centered {
-  display: flex;
-  align-items: center;
-  min-height: calc(100% - (#{$modal-dialog-margin} * 2));
-
-  // Ensure `modal-dialog-centered` extends the full height of the view (IE10/11)
-  &::before {
-    display: block; // IE10
-    height: calc(100vh - (#{$modal-dialog-margin} * 2));
-    content: "";
-  }
-}
-
-// Actual modal
-.modal-content {
-  position: relative;
-  display: flex;
-  flex-direction: column;
-  width: 100%; // Ensure `.modal-content` extends the full width of the parent `.modal-dialog`
-  // counteract the pointer-events: none; in the .modal-dialog
-  pointer-events: auto;
-  background-color: $modal-content-bg;
-  background-clip: padding-box;
-  border: $modal-content-border-width solid $modal-content-border-color;
-  @include border-radius($modal-content-border-radius);
-  @include box-shadow($modal-content-box-shadow-xs);
-  // Remove focus outline from opened modal
-  outline: 0;
-}
-
-// Modal background
-.modal-backdrop {
-  position: fixed;
-  top: 0;
-  left: 0;
-  z-index: $zindex-modal-backdrop;
-  width: 100vw;
-  height: 100vh;
-  background-color: $modal-backdrop-bg;
-
-  // Fade for backdrop
-  &.fade { opacity: 0; }
-  &.show { opacity: $modal-backdrop-opacity; }
-}
-
-// Modal header
-// Top section of the modal w/ title and dismiss
-.modal-header {
-  display: flex;
-  align-items: flex-start; // so the close btn always stays on the upper right corner
-  justify-content: space-between; // Put modal header elements (title and dismiss) on opposite ends
-  padding: $modal-header-padding;
-  border-bottom: $modal-header-border-width solid $modal-header-border-color;
-  @include border-top-radius($modal-content-border-radius);
-
-  .close {
-    padding: $modal-header-padding;
-    // auto on the left force icon to the right even when there is no .modal-title
-    margin: (-$modal-header-padding-y) (-$modal-header-padding-x) (-$modal-header-padding-y) auto;
-  }
-}
-
-// Title text within header
-.modal-title {
-  margin-bottom: 0;
-  line-height: $modal-title-line-height;
-}
-
-// Modal body
-// Where all modal content resides (sibling of .modal-header and .modal-footer)
-.modal-body {
-  position: relative;
-  // Enable `flex-grow: 1` so that the body take up as much space as possible
-  // when should there be a fixed height on `.modal-dialog`.
-  flex: 1 1 auto;
-  padding: $modal-inner-padding;
-}
-
-// Footer (for actions)
-.modal-footer {
-  display: flex;
-  align-items: center; // vertically center
-  justify-content: flex-end; // Right align buttons with flex property because text-align doesn't work on flex items
-  padding: $modal-inner-padding;
-  border-top: $modal-footer-border-width solid $modal-footer-border-color;
-  @include border-bottom-radius($modal-content-border-radius);
-
-  // Easily place margin between footer elements
-  > :not(:first-child) { margin-left: .25rem; }
-  > :not(:last-child) { margin-right: .25rem; }
-}
-
-// Measure scrollbar width for padding body during modal show/hide
-.modal-scrollbar-measure {
-  position: absolute;
-  top: -9999px;
-  width: 50px;
-  height: 50px;
-  overflow: scroll;
-}
-
-// Scale up the modal
-@include media-breakpoint-up(sm) {
-  // Automatically set modal's width for larger viewports
-  .modal-dialog {
-    max-width: $modal-md;
-    margin: $modal-dialog-margin-y-sm-up auto;
-  }
-
-  .modal-dialog-centered {
-    min-height: calc(100% - (#{$modal-dialog-margin-y-sm-up} * 2));
-
-    &::before {
-      height: calc(100vh - (#{$modal-dialog-margin-y-sm-up} * 2));
-    }
-  }
-
-  .modal-content {
-    @include box-shadow($modal-content-box-shadow-sm-up);
-  }
-
-  .modal-sm { max-width: $modal-sm; }
-}
-
-@include media-breakpoint-up(lg) {
-  .modal-lg,
-  .modal-xl {
-    max-width: $modal-lg;
-  }
-}
-
-@include media-breakpoint-up(xl) {
-  .modal-xl { max-width: $modal-xl; }
-}
diff --git a/scss/bootstrap/_nav.scss b/scss/bootstrap/_nav.scss
deleted file mode 100644
index e5519b3a4d..0000000000
--- a/scss/bootstrap/_nav.scss
+++ /dev/null
@@ -1,120 +0,0 @@
-// Base class
-//
-// Kickstart any navigation component with a set of style resets. Works with
-// `<nav>`s or `<ul>`s.
-
-.nav {
-  display: flex;
-  flex-wrap: wrap;
-  padding-left: 0;
-  margin-bottom: 0;
-  list-style: none;
-}
-
-.nav-link {
-  display: block;
-  padding: $nav-link-padding-y $nav-link-padding-x;
-
-  @include hover-focus {
-    text-decoration: none;
-  }
-
-  // Disabled state lightens text
-  &.disabled {
-    color: $nav-link-disabled-color;
-    pointer-events: none;
-    cursor: default;
-  }
-}
-
-//
-// Tabs
-//
-
-.nav-tabs {
-  border-bottom: $nav-tabs-border-width solid $nav-tabs-border-color;
-
-  .nav-item {
-    margin-bottom: -$nav-tabs-border-width;
-  }
-
-  .nav-link {
-    border: $nav-tabs-border-width solid transparent;
-    @include border-top-radius($nav-tabs-border-radius);
-
-    @include hover-focus {
-      border-color: $nav-tabs-link-hover-border-color;
-    }
-
-    &.disabled {
-      color: $nav-link-disabled-color;
-      background-color: transparent;
-      border-color: transparent;
-    }
-  }
-
-  .nav-link.active,
-  .nav-item.show .nav-link {
-    color: $nav-tabs-link-active-color;
-    background-color: $nav-tabs-link-active-bg;
-    border-color: $nav-tabs-link-active-border-color;
-  }
-
-  .dropdown-menu {
-    // Make dropdown border overlap tab border
-    margin-top: -$nav-tabs-border-width;
-    // Remove the top rounded corners here since there is a hard edge above the menu
-    @include border-top-radius(0);
-  }
-}
-
-
-//
-// Pills
-//
-
-.nav-pills {
-  .nav-link {
-    @include border-radius($nav-pills-border-radius);
-  }
-
-  .nav-link.active,
-  .show > .nav-link {
-    color: $nav-pills-link-active-color;
-    background-color: $nav-pills-link-active-bg;
-  }
-}
-
-
-//
-// Justified variants
-//
-
-.nav-fill {
-  .nav-item {
-    flex: 1 1 auto;
-    text-align: center;
-  }
-}
-
-.nav-justified {
-  .nav-item {
-    flex-basis: 0;
-    flex-grow: 1;
-    text-align: center;
-  }
-}
-
-
-// Tabbable tabs
-//
-// Hide tabbable panes to start, show them when `.active`
-
-.tab-content {
-  > .tab-pane {
-    display: none;
-  }
-  > .active {
-    display: block;
-  }
-}
diff --git a/scss/bootstrap/_navbar.scss b/scss/bootstrap/_navbar.scss
deleted file mode 100644
index b5bc5a9748..0000000000
--- a/scss/bootstrap/_navbar.scss
+++ /dev/null
@@ -1,299 +0,0 @@
-// Contents
-//
-// Navbar
-// Navbar brand
-// Navbar nav
-// Navbar text
-// Navbar divider
-// Responsive navbar
-// Navbar position
-// Navbar themes
-
-
-// Navbar
-//
-// Provide a static navbar from which we expand to create full-width, fixed, and
-// other navbar variations.
-
-.navbar {
-  position: relative;
-  display: flex;
-  flex-wrap: wrap; // allow us to do the line break for collapsing content
-  align-items: center;
-  justify-content: space-between; // space out brand from logo
-  padding: $navbar-padding-y $navbar-padding-x;
-
-  // Because flex properties aren't inherited, we need to redeclare these first
-  // few properties so that content nested within behave properly.
-  > .container,
-  > .container-fluid {
-    display: flex;
-    flex-wrap: wrap;
-    align-items: center;
-    justify-content: space-between;
-  }
-}
-
-
-// Navbar brand
-//
-// Used for brand, project, or site names.
-
-.navbar-brand {
-  display: inline-block;
-  padding-top: $navbar-brand-padding-y;
-  padding-bottom: $navbar-brand-padding-y;
-  margin-right: $navbar-padding-x;
-  font-size: $navbar-brand-font-size;
-  line-height: inherit;
-  white-space: nowrap;
-
-  @include hover-focus {
-    text-decoration: none;
-  }
-}
-
-
-// Navbar nav
-//
-// Custom navbar navigation (doesn't require `.nav`, but does make use of `.nav-link`).
-
-.navbar-nav {
-  display: flex;
-  flex-direction: column; // cannot use `inherit` to get the `.navbar`s value
-  padding-left: 0;
-  margin-bottom: 0;
-  list-style: none;
-
-  .nav-link {
-    padding-right: 0;
-    padding-left: 0;
-  }
-
-  .dropdown-menu {
-    position: static;
-    float: none;
-  }
-}
-
-
-// Navbar text
-//
-//
-
-.navbar-text {
-  display: inline-block;
-  padding-top: $nav-link-padding-y;
-  padding-bottom: $nav-link-padding-y;
-}
-
-
-// Responsive navbar
-//
-// Custom styles for responsive collapsing and toggling of navbar contents.
-// Powered by the collapse Bootstrap JavaScript plugin.
-
-// When collapsed, prevent the toggleable navbar contents from appearing in
-// the default flexbox row orientation. Requires the use of `flex-wrap: wrap`
-// on the `.navbar` parent.
-.navbar-collapse {
-  flex-basis: 100%;
-  flex-grow: 1;
-  // For always expanded or extra full navbars, ensure content aligns itself
-  // properly vertically. Can be easily overridden with flex utilities.
-  align-items: center;
-}
-
-// Button for toggling the navbar when in its collapsed state
-.navbar-toggler {
-  padding: $navbar-toggler-padding-y $navbar-toggler-padding-x;
-  font-size: $navbar-toggler-font-size;
-  line-height: 1;
-  background-color: transparent; // remove default button style
-  border: $border-width solid transparent; // remove default button style
-  @include border-radius($navbar-toggler-border-radius);
-
-  @include hover-focus {
-    text-decoration: none;
-  }
-
-  // Opinionated: add "hand" cursor to non-disabled .navbar-toggler elements
-  &:not(:disabled):not(.disabled) {
-    cursor: pointer;
-  }
-}
-
-// Keep as a separate element so folks can easily override it with another icon
-// or image file as needed.
-.navbar-toggler-icon {
-  display: inline-block;
-  width: 1.5em;
-  height: 1.5em;
-  vertical-align: middle;
-  content: "";
-  background: no-repeat center center;
-  background-size: 100% 100%;
-}
-
-// Generate series of `.navbar-expand-*` responsive classes for configuring
-// where your navbar collapses.
-.navbar-expand {
-  @each $breakpoint in map-keys($grid-breakpoints) {
-    $next: breakpoint-next($breakpoint, $grid-breakpoints);
-    $infix: breakpoint-infix($next, $grid-breakpoints);
-
-    &#{$infix} {
-      @include media-breakpoint-down($breakpoint) {
-        > .container,
-        > .container-fluid {
-          padding-right: 0;
-          padding-left: 0;
-        }
-      }
-
-      @include media-breakpoint-up($next) {
-        flex-flow: row nowrap;
-        justify-content: flex-start;
-
-        .navbar-nav {
-          flex-direction: row;
-
-          .dropdown-menu {
-            position: absolute;
-          }
-
-          .nav-link {
-            padding-right: $navbar-nav-link-padding-x;
-            padding-left: $navbar-nav-link-padding-x;
-          }
-        }
-
-        // For nesting containers, have to redeclare for alignment purposes
-        > .container,
-        > .container-fluid {
-          flex-wrap: nowrap;
-        }
-
-        .navbar-collapse {
-          display: flex !important;  // stylelint-disable-line declaration-no-important
-
-          // Changes flex-bases to auto because of an IE10 bug
-          flex-basis: auto;
-        }
-
-        .navbar-toggler {
-          display: none;
-        }
-      }
-    }
-  }
-}
-
-
-// Navbar themes
-//
-// Styles for switching between navbars with light or dark background.
-
-// Dark links against a light background
-.navbar-light {
-  .navbar-brand {
-    color: $navbar-light-brand-color;
-
-    @include hover-focus {
-      color: $navbar-light-brand-hover-color;
-    }
-  }
-
-  .navbar-nav {
-    .nav-link {
-      color: $navbar-light-color;
-
-      @include hover-focus {
-        color: $navbar-light-hover-color;
-      }
-
-      &.disabled {
-        color: $navbar-light-disabled-color;
-      }
-    }
-
-    .show > .nav-link,
-    .active > .nav-link,
-    .nav-link.show,
-    .nav-link.active {
-      color: $navbar-light-active-color;
-    }
-  }
-
-  .navbar-toggler {
-    color: $navbar-light-color;
-    border-color: $navbar-light-toggler-border-color;
-  }
-
-  .navbar-toggler-icon {
-    background-image: $navbar-light-toggler-icon-bg;
-  }
-
-  .navbar-text {
-    color: $navbar-light-color;
-    a {
-      color: $navbar-light-active-color;
-
-      @include hover-focus {
-        color: $navbar-light-active-color;
-      }
-    }
-  }
-}
-
-// White links against a dark background
-.navbar-dark {
-  .navbar-brand {
-    color: $navbar-dark-brand-color;
-
-    @include hover-focus {
-      color: $navbar-dark-brand-hover-color;
-    }
-  }
-
-  .navbar-nav {
-    .nav-link {
-      color: $navbar-dark-color;
-
-      @include hover-focus {
-        color: $navbar-dark-hover-color;
-      }
-
-      &.disabled {
-        color: $navbar-dark-disabled-color;
-      }
-    }
-
-    .show > .nav-link,
-    .active > .nav-link,
-    .nav-link.show,
-    .nav-link.active {
-      color: $navbar-dark-active-color;
-    }
-  }
-
-  .navbar-toggler {
-    color: $navbar-dark-color;
-    border-color: $navbar-dark-toggler-border-color;
-  }
-
-  .navbar-toggler-icon {
-    background-image: $navbar-dark-toggler-icon-bg;
-  }
-
-  .navbar-text {
-    color: $navbar-dark-color;
-    a {
-      color: $navbar-dark-active-color;
-
-      @include hover-focus {
-        color: $navbar-dark-active-color;
-      }
-    }
-  }
-}
diff --git a/scss/bootstrap/_pagination.scss b/scss/bootstrap/_pagination.scss
deleted file mode 100644
index 9349f3f900..0000000000
--- a/scss/bootstrap/_pagination.scss
+++ /dev/null
@@ -1,78 +0,0 @@
-.pagination {
-  display: flex;
-  @include list-unstyled();
-  @include border-radius();
-}
-
-.page-link {
-  position: relative;
-  display: block;
-  padding: $pagination-padding-y $pagination-padding-x;
-  margin-left: -$pagination-border-width;
-  line-height: $pagination-line-height;
-  color: $pagination-color;
-  background-color: $pagination-bg;
-  border: $pagination-border-width solid $pagination-border-color;
-
-  &:hover {
-    z-index: 2;
-    color: $pagination-hover-color;
-    text-decoration: none;
-    background-color: $pagination-hover-bg;
-    border-color: $pagination-hover-border-color;
-  }
-
-  &:focus {
-    z-index: 2;
-    outline: $pagination-focus-outline;
-    box-shadow: $pagination-focus-box-shadow;
-  }
-
-  // Opinionated: add "hand" cursor to non-disabled .page-link elements
-  &:not(:disabled):not(.disabled) {
-    cursor: pointer;
-  }
-}
-
-.page-item {
-  &:first-child {
-    .page-link {
-      margin-left: 0;
-      @include border-left-radius($border-radius);
-    }
-  }
-  &:last-child {
-    .page-link {
-      @include border-right-radius($border-radius);
-    }
-  }
-
-  &.active .page-link {
-    z-index: 1;
-    color: $pagination-active-color;
-    background-color: $pagination-active-bg;
-    border-color: $pagination-active-border-color;
-  }
-
-  &.disabled .page-link {
-    color: $pagination-disabled-color;
-    pointer-events: none;
-    // Opinionated: remove the "hand" cursor set previously for .page-link
-    cursor: auto;
-    background-color: $pagination-disabled-bg;
-    border-color: $pagination-disabled-border-color;
-  }
-}
-
-
-//
-// Sizing
-//
-
-.pagination-lg {
-  @include pagination-size($pagination-padding-y-lg, $pagination-padding-x-lg, $font-size-lg, $line-height-lg, $border-radius-lg);
-}
-
-.pagination-sm {
-  @include pagination-size($pagination-padding-y-sm, $pagination-padding-x-sm, $font-size-sm, $line-height-sm, $border-radius-sm);
-}
diff --git a/scss/bootstrap/_popover.scss b/scss/bootstrap/_popover.scss
deleted file mode 100644
index 3ef5f628bd..0000000000
--- a/scss/bootstrap/_popover.scss
+++ /dev/null
@@ -1,183 +0,0 @@
-.popover {
-  position: absolute;
-  top: 0;
-  left: 0;
-  z-index: $zindex-popover;
-  display: block;
-  max-width: $popover-max-width;
-  // Our parent element can be arbitrary since tooltips are by default inserted as a sibling of their target element.
-  // So reset our font and text properties to avoid inheriting weird values.
-  @include reset-text();
-  font-size: $popover-font-size;
-  // Allow breaking very long words so they don't overflow the popover's bounds
-  word-wrap: break-word;
-  background-color: $popover-bg;
-  background-clip: padding-box;
-  border: $popover-border-width solid $popover-border-color;
-  @include border-radius($popover-border-radius);
-  @include box-shadow($popover-box-shadow);
-
-  .arrow {
-    position: absolute;
-    display: block;
-    width: $popover-arrow-width;
-    height: $popover-arrow-height;
-    margin: 0 $border-radius-lg;
-
-    &::before,
-    &::after {
-      position: absolute;
-      display: block;
-      content: "";
-      border-color: transparent;
-      border-style: solid;
-    }
-  }
-}
-
-.bs-popover-top {
-  margin-bottom: $popover-arrow-height;
-
-  .arrow {
-    bottom: calc((#{$popover-arrow-height} + #{$popover-border-width}) * -1);
-  }
-
-  .arrow::before,
-  .arrow::after {
-    border-width: $popover-arrow-height ($popover-arrow-width / 2) 0;
-  }
-
-  .arrow::before {
-    bottom: 0;
-    border-top-color: $popover-arrow-outer-color;
-  }
-
-  .arrow::after {
-    bottom: $popover-border-width;
-    border-top-color: $popover-arrow-color;
-  }
-}
-
-.bs-popover-right {
-  margin-left: $popover-arrow-height;
-
-  .arrow {
-    left: calc((#{$popover-arrow-height} + #{$popover-border-width}) * -1);
-    width: $popover-arrow-height;
-    height: $popover-arrow-width;
-    margin: $border-radius-lg 0; // make sure the arrow does not touch the popover's rounded corners
-  }
-
-  .arrow::before,
-  .arrow::after {
-    border-width: ($popover-arrow-width / 2) $popover-arrow-height ($popover-arrow-width / 2) 0;
-  }
-
-  .arrow::before {
-    left: 0;
-    border-right-color: $popover-arrow-outer-color;
-  }
-
-  .arrow::after {
-    left: $popover-border-width;
-    border-right-color: $popover-arrow-color;
-  }
-}
-
-.bs-popover-bottom {
-  margin-top: $popover-arrow-height;
-
-  .arrow {
-    top: calc((#{$popover-arrow-height} + #{$popover-border-width}) * -1);
-  }
-
-  .arrow::before,
-  .arrow::after {
-    border-width: 0 ($popover-arrow-width / 2) $popover-arrow-height ($popover-arrow-width / 2);
-  }
-
-  .arrow::before {
-    top: 0;
-    border-bottom-color: $popover-arrow-outer-color;
-  }
-
-  .arrow::after {
-    top: $popover-border-width;
-    border-bottom-color: $popover-arrow-color;
-  }
-
-  // This will remove the popover-header's border just below the arrow
-  .popover-header::before {
-    position: absolute;
-    top: 0;
-    left: 50%;
-    display: block;
-    width: $popover-arrow-width;
-    margin-left: ($popover-arrow-width / -2);
-    content: "";
-    border-bottom: $popover-border-width solid $popover-header-bg;
-  }
-}
-
-.bs-popover-left {
-  margin-right: $popover-arrow-height;
-
-  .arrow {
-    right: calc((#{$popover-arrow-height} + #{$popover-border-width}) * -1);
-    width: $popover-arrow-height;
-    height: $popover-arrow-width;
-    margin: $border-radius-lg 0; // make sure the arrow does not touch the popover's rounded corners
-  }
-
-  .arrow::before,
-  .arrow::after {
-    border-width: ($popover-arrow-width / 2) 0 ($popover-arrow-width / 2) $popover-arrow-height;
-  }
-
-  .arrow::before {
-    right: 0;
-    border-left-color: $popover-arrow-outer-color;
-  }
-
-  .arrow::after {
-    right: $popover-border-width;
-    border-left-color: $popover-arrow-color;
-  }
-}
-
-.bs-popover-auto {
-  &[x-placement^="top"] {
-    @extend .bs-popover-top;
-  }
-  &[x-placement^="right"] {
-    @extend .bs-popover-right;
-  }
-  &[x-placement^="bottom"] {
-    @extend .bs-popover-bottom;
-  }
-  &[x-placement^="left"] {
-    @extend .bs-popover-left;
-  }
-}
-
-
-// Offset the popover to account for the popover arrow
-.popover-header {
-  padding: $popover-header-padding-y $popover-header-padding-x;
-  margin-bottom: 0; // Reset the default from Reboot
-  font-size: $font-size-base;
-  color: $popover-header-color;
-  background-color: $popover-header-bg;
-  border-bottom: $popover-border-width solid darken($popover-header-bg, 5%);
-  $offset-border-width: calc(#{$border-radius-lg} - #{$popover-border-width});
-  @include border-top-radius($offset-border-width);
-
-  &:empty {
-    display: none;
-  }
-}
-
-.popover-body {
-  padding: $popover-body-padding-y $popover-body-padding-x;
-  color: $popover-body-color;
-}
diff --git a/scss/bootstrap/_print.scss b/scss/bootstrap/_print.scss
deleted file mode 100644
index 1df9487358..0000000000
--- a/scss/bootstrap/_print.scss
+++ /dev/null
@@ -1,141 +0,0 @@
-// stylelint-disable declaration-no-important, selector-no-qualifying-type
-
-// Source: https://github.com/h5bp/html5-boilerplate/blob/master/src/css/main.css
-
-// ==========================================================================
-// Print styles.
-// Inlined to avoid the additional HTTP request:
-// https://www.phpied.com/delay-loading-your-print-css/
-// ==========================================================================
-
-@if $enable-print-styles {
-  @media print {
-    *,
-    *::before,
-    *::after {
-      // Bootstrap specific; comment out `color` and `background`
-      //color: $black !important; // Black prints faster
-      text-shadow: none !important;
-      //background: transparent !important;
-      box-shadow: none !important;
-    }
-
-    a {
-      &:not(.btn) {
-        text-decoration: underline;
-      }
-    }
-
-    // Bootstrap specific; comment the following selector out
-    //a[href]::after {
-    //  content: " (" attr(href) ")";
-    //}
-
-    abbr[title]::after {
-      content: " (" attr(title) ")";
-    }
-
-    // Bootstrap specific; comment the following selector out
-    //
-    // Don't show links that are fragment identifiers,
-    // or use the `javascript:` pseudo protocol
-    //
-
-    //a[href^="#"]::after,
-    //a[href^="javascript:"]::after {
-    // content: "";
-    //}
-
-    pre {
-      white-space: pre-wrap !important;
-    }
-    pre,
-    blockquote {
-      border: $border-width solid $gray-500;   // Bootstrap custom code; using `$border-width` instead of 1px
-      page-break-inside: avoid;
-    }
-
-    //
-    // Printing Tables:
-    // http://css-discuss.incutio.com/wiki/Printing_Tables
-    //
-
-    thead {
-      display: table-header-group;
-    }
-
-    tr,
-    img {
-      page-break-inside: avoid;
-    }
-
-    p,
-    h2,
-    h3 {
-      orphans: 3;
-      widows: 3;
-    }
-
-    h2,
-    h3 {
-      page-break-after: avoid;
-    }
-
-    // Bootstrap specific changes start
-
-    // Specify a size and min-width to make printing closer across browsers.
-    // We don't set margin here because it breaks `size` in Chrome. We also
-    // don't use `!important` on `size` as it breaks in Chrome.
-    @page {
-      size: $print-page-size;
-    }
-    body {
-      min-width: $print-body-min-width !important;
-    }
-    .container {
-      min-width: $print-body-min-width !important;
-    }
-
-    // Bootstrap components
-    .navbar {
-      display: none;
-    }
-    .badge {
-      border: $border-width solid $black;
-    }
-
-    .table {
-      border-collapse: collapse !important;
-
-      td,
-      th {
-        background-color: $white !important;
-      }
-    }
-
-    .table-bordered {
-      th,
-      td {
-        border: 1px solid $gray-300 !important;
-      }
-    }
-
-    .table-dark {
-      color: inherit;
-
-      th,
-      td,
-      thead th,
-      tbody + tbody {
-        border-color: $table-border-color;
-      }
-    }
-
-    .table .thead-dark th {
-      color: inherit;
-      border-color: $table-border-color;
-    }
-
-    // Bootstrap specific changes end
-  }
-}
diff --git a/scss/bootstrap/_progress.scss b/scss/bootstrap/_progress.scss
deleted file mode 100644
index 0ac3e0c93f..0000000000
--- a/scss/bootstrap/_progress.scss
+++ /dev/null
@@ -1,34 +0,0 @@
-@keyframes progress-bar-stripes {
-  from { background-position: $progress-height 0; }
-  to { background-position: 0 0; }
-}
-
-.progress {
-  display: flex;
-  height: $progress-height;
-  overflow: hidden; // force rounded corners by cropping it
-  font-size: $progress-font-size;
-  background-color: $progress-bg;
-  @include border-radius($progress-border-radius);
-  @include box-shadow($progress-box-shadow);
-}
-
-.progress-bar {
-  display: flex;
-  flex-direction: column;
-  justify-content: center;
-  color: $progress-bar-color;
-  text-align: center;
-  white-space: nowrap;
-  background-color: $progress-bar-bg;
-  @include transition($progress-bar-transition);
-}
-
-.progress-bar-striped {
-  @include gradient-striped();
-  background-size: $progress-height $progress-height;
-}
-
-.progress-bar-animated {
-  animation: progress-bar-stripes $progress-bar-animation-timing;
-}
diff --git a/scss/bootstrap/_reboot.scss b/scss/bootstrap/_reboot.scss
deleted file mode 100644
index 8c727d029c..0000000000
--- a/scss/bootstrap/_reboot.scss
+++ /dev/null
@@ -1,475 +0,0 @@
-// stylelint-disable at-rule-no-vendor-prefix, declaration-no-important, selector-no-qualifying-type, property-no-vendor-prefix
-
-// Reboot
-//
-// Normalization of HTML elements, manually forked from Normalize.css to remove
-// styles targeting irrelevant browsers while applying new styles.
-//
-// Normalize is licensed MIT. https://github.com/necolas/normalize.css
-
-
-// Document
-//
-// 1. Change from `box-sizing: content-box` so that `width` is not affected by `padding` or `border`.
-// 2. Change the default font family in all browsers.
-// 3. Correct the line height in all browsers.
-// 4. Prevent adjustments of font size after orientation changes in IE on Windows Phone and in iOS.
-// 5. Setting @viewport causes scrollbars to overlap content in IE11 and Edge, so
-//    we force a non-overlapping, non-auto-hiding scrollbar to counteract.
-// 6. Change the default tap highlight to be completely transparent in iOS.
-
-*,
-*::before,
-*::after {
-  box-sizing: border-box; // 1
-}
-
-html {
-  font-family: sans-serif; // 2
-  line-height: 1.15; // 3
-  -webkit-text-size-adjust: 100%; // 4
-  -ms-overflow-style: scrollbar; // 5
-  -webkit-tap-highlight-color: rgba($black, 0); // 6
-}
-
-// IE10+ doesn't honor `<meta name="viewport">` in some cases.
-@at-root {
-  @-ms-viewport {
-    width: device-width;
-  }
-}
-
-// Shim for "new" HTML5 structural elements to display correctly (IE10, older browsers)
-// TODO: remove in v5
-// stylelint-disable-next-line selector-list-comma-newline-after
-article, aside, figcaption, figure, footer, header, hgroup, main, nav, section {
-  display: block;
-}
-
-// Body
-//
-// 1. Remove the margin in all browsers.
-// 2. As a best practice, apply a default `background-color`.
-// 3. Set an explicit initial text-align value so that we can later use the
-//    the `inherit` value on things like `<th>` elements.
-
-body {
-  margin: 0; // 1
-  font-family: $font-family-base;
-  font-size: $font-size-base;
-  font-weight: $font-weight-base;
-  line-height: $line-height-base;
-  color: $body-color;
-  text-align: left; // 3
-  background-color: $body-bg; // 2
-}
-
-// Suppress the focus outline on elements that cannot be accessed via keyboard.
-// This prevents an unwanted focus outline from appearing around elements that
-// might still respond to pointer events.
-//
-// Credit: https://github.com/suitcss/base
-[tabindex="-1"]:focus {
-  outline: 0 !important;
-}
-
-
-// Content grouping
-//
-// 1. Add the correct box sizing in Firefox.
-// 2. Show the overflow in Edge and IE.
-
-hr {
-  box-sizing: content-box; // 1
-  height: 0; // 1
-  overflow: visible; // 2
-}
-
-
-//
-// Typography
-//
-
-// Remove top margins from headings
-//
-// By default, `<h1>`-`<h6>` all receive top and bottom margins. We nuke the top
-// margin for easier control within type scales as it avoids margin collapsing.
-// stylelint-disable-next-line selector-list-comma-newline-after
-h1, h2, h3, h4, h5, h6 {
-  margin-top: 0;
-  margin-bottom: $headings-margin-bottom;
-}
-
-// Reset margins on paragraphs
-//
-// Similarly, the top margin on `<p>`s get reset. However, we also reset the
-// bottom margin to use `rem` units instead of `em`.
-p {
-  margin-top: 0;
-  margin-bottom: $paragraph-margin-bottom;
-}
-
-// Abbreviations
-//
-// 1. Duplicate behavior to the data-* attribute for our tooltip plugin
-// 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
-// 3. Add explicit cursor to indicate changed behavior.
-// 4. Remove the bottom border in Firefox 39-.
-// 5. Prevent the text-decoration to be skipped.
-
-abbr[title],
-abbr[data-original-title] { // 1
-  text-decoration: underline; // 2
-  text-decoration: underline dotted; // 2
-  cursor: help; // 3
-  border-bottom: 0; // 4
-  text-decoration-skip-ink: none; // 5
-}
-
-address {
-  margin-bottom: 1rem;
-  font-style: normal;
-  line-height: inherit;
-}
-
-ol,
-ul,
-dl {
-  margin-top: 0;
-  margin-bottom: 1rem;
-}
-
-ol ol,
-ul ul,
-ol ul,
-ul ol {
-  margin-bottom: 0;
-}
-
-dt {
-  font-weight: $dt-font-weight;
-}
-
-dd {
-  margin-bottom: .5rem;
-  margin-left: 0; // Undo browser default
-}
-
-blockquote {
-  margin: 0 0 1rem;
-}
-
-b,
-strong {
-  font-weight: bolder; // Add the correct font weight in Chrome, Edge, and Safari
-}
-
-small {
-  font-size: 80%; // Add the correct font size in all browsers
-}
-
-//
-// Prevent `sub` and `sup` elements from affecting the line height in
-// all browsers.
-//
-
-sub,
-sup {
-  position: relative;
-  font-size: 75%;
-  line-height: 0;
-  vertical-align: baseline;
-}
-
-sub { bottom: -.25em; }
-sup { top: -.5em; }
-
-
-//
-// Links
-//
-
-a {
-  color: $link-color;
-  text-decoration: $link-decoration;
-  background-color: transparent; // Remove the gray background on active links in IE 10.
-
-  @include hover {
-    color: $link-hover-color;
-    text-decoration: $link-hover-decoration;
-  }
-}
-
-// And undo these styles for placeholder links/named anchors (without href)
-// which have not been made explicitly keyboard-focusable (without tabindex).
-// It would be more straightforward to just use a[href] in previous block, but that
-// causes specificity issues in many other styles that are too complex to fix.
-// See https://github.com/twbs/bootstrap/issues/19402
-
-a:not([href]):not([tabindex]) {
-  color: inherit;
-  text-decoration: none;
-
-  @include hover-focus {
-    color: inherit;
-    text-decoration: none;
-  }
-
-  &:focus {
-    outline: 0;
-  }
-}
-
-
-//
-// Code
-//
-
-pre,
-code,
-kbd,
-samp {
-  font-family: $font-family-monospace;
-  font-size: 1em; // Correct the odd `em` font sizing in all browsers.
-}
-
-pre {
-  // Remove browser default top margin
-  margin-top: 0;
-  // Reset browser default of `1em` to use `rem`s
-  margin-bottom: 1rem;
-  // Don't allow content to break outside
-  overflow: auto;
-  // We have @viewport set which causes scrollbars to overlap content in IE11 and Edge, so
-  // we force a non-overlapping, non-auto-hiding scrollbar to counteract.
-  -ms-overflow-style: scrollbar;
-}
-
-
-//
-// Figures
-//
-
-figure {
-  // Apply a consistent margin strategy (matches our type styles).
-  margin: 0 0 1rem;
-}
-
-
-//
-// Images and content
-//
-
-img {
-  vertical-align: middle;
-  border-style: none; // Remove the border on images inside links in IE 10-.
-}
-
-svg {
-  // Workaround for the SVG overflow bug in IE10/11 is still required.
-  // See https://github.com/twbs/bootstrap/issues/26878
-  overflow: hidden;
-  vertical-align: middle;
-}
-
-
-//
-// Tables
-//
-
-table {
-  border-collapse: collapse; // Prevent double borders
-}
-
-caption {
-  padding-top: $table-cell-padding;
-  padding-bottom: $table-cell-padding;
-  color: $table-caption-color;
-  text-align: left;
-  caption-side: bottom;
-}
-
-th {
-  // Matches default `<td>` alignment by inheriting from the `<body>`, or the
-  // closest parent with a set `text-align`.
-  text-align: inherit;
-}
-
-
-//
-// Forms
-//
-
-label {
-  // Allow labels to use `margin` for spacing.
-  display: inline-block;
-  margin-bottom: $label-margin-bottom;
-}
-
-// Remove the default `border-radius` that macOS Chrome adds.
-//
-// Details at https://github.com/twbs/bootstrap/issues/24093
-button {
-  border-radius: 0;
-}
-
-// Work around a Firefox/IE bug where the transparent `button` background
-// results in a loss of the default `button` focus styles.
-//
-// Credit: https://github.com/suitcss/base/
-button:focus {
-  outline: 1px dotted;
-  outline: 5px auto -webkit-focus-ring-color;
-}
-
-input,
-button,
-select,
-optgroup,
-textarea {
-  margin: 0; // Remove the margin in Firefox and Safari
-  font-family: inherit;
-  font-size: inherit;
-  line-height: inherit;
-}
-
-button,
-input {
-  overflow: visible; // Show the overflow in Edge
-}
-
-button,
-select {
-  text-transform: none; // Remove the inheritance of text transform in Firefox
-}
-
-// 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
-//    controls in Android 4.
-// 2. Correct the inability to style clickable types in iOS and Safari.
-button,
-[type="button"], // 1
-[type="reset"],
-[type="submit"] {
-  -webkit-appearance: button; // 2
-}
-
-// Remove inner border and padding from Firefox, but don't restore the outline like Normalize.
-button::-moz-focus-inner,
-[type="button"]::-moz-focus-inner,
-[type="reset"]::-moz-focus-inner,
-[type="submit"]::-moz-focus-inner {
-  padding: 0;
-  border-style: none;
-}
-
-input[type="radio"],
-input[type="checkbox"] {
-  box-sizing: border-box; // 1. Add the correct box sizing in IE 10-
-  padding: 0; // 2. Remove the padding in IE 10-
-}
-
-
-input[type="date"],
-input[type="time"],
-input[type="datetime-local"],
-input[type="month"] {
-  // Remove the default appearance of temporal inputs to avoid a Mobile Safari
-  // bug where setting a custom line-height prevents text from being vertically
-  // centered within the input.
-  // See https://bugs.webkit.org/show_bug.cgi?id=139848
-  // and https://github.com/twbs/bootstrap/issues/11266
-  -webkit-appearance: listbox;
-}
-
-textarea {
-  overflow: auto; // Remove the default vertical scrollbar in IE.
-  // Textareas should really only resize vertically so they don't break their (horizontal) containers.
-  resize: vertical;
-}
-
-fieldset {
-  // Browsers set a default `min-width: min-content;` on fieldsets,
-  // unlike e.g. `<div>`s, which have `min-width: 0;` by default.
-  // So we reset that to ensure fieldsets behave more like a standard block element.
-  // See https://github.com/twbs/bootstrap/issues/12359
-  // and https://html.spec.whatwg.org/multipage/#the-fieldset-and-legend-elements
-  min-width: 0;
-  // Reset the default outline behavior of fieldsets so they don't affect page layout.
-  padding: 0;
-  margin: 0;
-  border: 0;
-}
-
-// 1. Correct the text wrapping in Edge and IE.
-// 2. Correct the color inheritance from `fieldset` elements in IE.
-legend {
-  display: block;
-  width: 100%;
-  max-width: 100%; // 1
-  padding: 0;
-  margin-bottom: .5rem;
-  font-size: 1.5rem;
-  line-height: inherit;
-  color: inherit; // 2
-  white-space: normal; // 1
-}
-
-progress {
-  vertical-align: baseline; // Add the correct vertical alignment in Chrome, Firefox, and Opera.
-}
-
-// Correct the cursor style of increment and decrement buttons in Chrome.
-[type="number"]::-webkit-inner-spin-button,
-[type="number"]::-webkit-outer-spin-button {
-  height: auto;
-}
-
-[type="search"] {
-  // This overrides the extra rounded corners on search inputs in iOS so that our
-  // `.form-control` class can properly style them. Note that this cannot simply
-  // be added to `.form-control` as it's not specific enough. For details, see
-  // https://github.com/twbs/bootstrap/issues/11586.
-  outline-offset: -2px; // 2. Correct the outline style in Safari.
-  -webkit-appearance: none;
-}
-
-//
-// Remove the inner padding and cancel buttons in Chrome and Safari on macOS.
-//
-
-[type="search"]::-webkit-search-decoration {
-  -webkit-appearance: none;
-}
-
-//
-// 1. Correct the inability to style clickable types in iOS and Safari.
-// 2. Change font properties to `inherit` in Safari.
-//
-
-::-webkit-file-upload-button {
-  font: inherit; // 2
-  -webkit-appearance: button; // 1
-}
-
-//
-// Correct element displays
-//
-
-output {
-  display: inline-block;
-}
-
-summary {
-  display: list-item; // Add the correct display in all browsers
-  cursor: pointer;
-}
-
-template {
-  display: none; // Add the correct display in IE
-}
-
-// Always hide an element with the `hidden` HTML attribute (from PureCSS).
-// Needed for proper display in IE 10-.
-[hidden] {
-  display: none !important;
-}
diff --git a/scss/bootstrap/_root.scss b/scss/bootstrap/_root.scss
deleted file mode 100644
index ad550df3b4..0000000000
--- a/scss/bootstrap/_root.scss
+++ /dev/null
@@ -1,19 +0,0 @@
-:root {
-  // Custom variable values only support SassScript inside `#{}`.
-  @each $color, $value in $colors {
-    --#{$color}: #{$value};
-  }
-
-  @each $color, $value in $theme-colors {
-    --#{$color}: #{$value};
-  }
-
-  @each $bp, $value in $grid-breakpoints {
-    --breakpoint-#{$bp}: #{$value};
-  }
-
-  // Use `inspect` for lists so that quoted items keep the quotes.
-  // See https://github.com/sass/sass/issues/2383#issuecomment-336349172
-  --font-family-sans-serif: #{inspect($font-family-sans-serif)};
-  --font-family-monospace: #{inspect($font-family-monospace)};
-}
diff --git a/scss/bootstrap/_spinners.scss b/scss/bootstrap/_spinners.scss
deleted file mode 100644
index 9489bd8611..0000000000
--- a/scss/bootstrap/_spinners.scss
+++ /dev/null
@@ -1,57 +0,0 @@
-//
-// Rotating border
-//
-
-@keyframes spinner-border {
-  to { transform: rotate(360deg); }
-}
-
-.spinner-border {
-  display: inline-block;
-  width: $spinner-width;
-  height: $spinner-height;
-  overflow: hidden;
-  text-indent: -999em;
-  vertical-align: text-bottom;
-  border: $spinner-border-width solid currentColor;
-  border-right-color: transparent;
-  border-radius: 50%;
-  animation: spinner-border .75s linear infinite;
-}
-
-.spinner-border-sm {
-  width: $spinner-width-sm;
-  height: $spinner-height-sm;
-  border-width: $spinner-border-width-sm;
-}
-
-//
-// Growing circle
-//
-
-@keyframes spinner-grow {
-  0% {
-    transform: scale(0);
-  }
-  50% {
-    opacity: 1;
-  }
-}
-
-.spinner-grow {
-  display: inline-block;
-  width: $spinner-width;
-  height: $spinner-height;
-  overflow: hidden;
-  text-indent: -999em;
-  vertical-align: text-bottom;
-  background-color: currentColor;
-  border-radius: 50%;
-  opacity: 0;
-  animation: spinner-grow .75s linear infinite;
-}
-
-.spinner-grow-sm {
-  width: $spinner-width-sm;
-  height: $spinner-height-sm;
-}
diff --git a/scss/bootstrap/_tables.scss b/scss/bootstrap/_tables.scss
deleted file mode 100644
index 92d4ec9b5b..0000000000
--- a/scss/bootstrap/_tables.scss
+++ /dev/null
@@ -1,187 +0,0 @@
-//
-// Basic Bootstrap table
-//
-
-.table {
-  width: 100%;
-  margin-bottom: $spacer;
-  background-color: $table-bg; // Reset for nesting within parents with `background-color`.
-
-  th,
-  td {
-    padding: $table-cell-padding;
-    vertical-align: top;
-    border-top: $table-border-width solid $table-border-color;
-  }
-
-  thead th {
-    vertical-align: bottom;
-    border-bottom: (2 * $table-border-width) solid $table-border-color;
-  }
-
-  tbody + tbody {
-    border-top: (2 * $table-border-width) solid $table-border-color;
-  }
-
-  .table {
-    background-color: $body-bg;
-  }
-}
-
-
-//
-// Condensed table w/ half padding
-//
-
-.table-sm {
-  th,
-  td {
-    padding: $table-cell-padding-sm;
-  }
-}
-
-
-// Border versions
-//
-// Add or remove borders all around the table and between all the columns.
-
-.table-bordered {
-  border: $table-border-width solid $table-border-color;
-
-  th,
-  td {
-    border: $table-border-width solid $table-border-color;
-  }
-
-  thead {
-    th,
-    td {
-      border-bottom-width: (2 * $table-border-width);
-    }
-  }
-}
-
-.table-borderless {
-  th,
-  td,
-  thead th,
-  tbody + tbody {
-    border: 0;
-  }
-}
-
-// Zebra-striping
-//
-// Default zebra-stripe styles (alternating gray and transparent backgrounds)
-
-.table-striped {
-  tbody tr:nth-of-type(#{$table-striped-order}) {
-    background-color: $table-accent-bg;
-  }
-}
-
-
-// Hover effect
-//
-// Placed here since it has to come after the potential zebra striping
-
-.table-hover {
-  tbody tr {
-    @include hover {
-      background-color: $table-hover-bg;
-    }
-  }
-}
-
-
-// Table backgrounds
-//
-// Exact selectors below required to override `.table-striped` and prevent
-// inheritance to nested tables.
-
-@each $color, $value in $theme-colors {
-  @include table-row-variant($color, theme-color-level($color, $table-bg-level), theme-color-level($color, $table-border-level));
-}
-
-@include table-row-variant(active, $table-active-bg);
-
-
-// Dark styles
-//
-// Same table markup, but inverted color scheme: dark background and light text.
-
-// stylelint-disable-next-line no-duplicate-selectors
-.table {
-  .thead-dark {
-    th {
-      color: $table-dark-color;
-      background-color: $table-dark-bg;
-      border-color: $table-dark-border-color;
-    }
-  }
-
-  .thead-light {
-    th {
-      color: $table-head-color;
-      background-color: $table-head-bg;
-      border-color: $table-border-color;
-    }
-  }
-}
-
-.table-dark {
-  color: $table-dark-color;
-  background-color: $table-dark-bg;
-
-  th,
-  td,
-  thead th {
-    border-color: $table-dark-border-color;
-  }
-
-  &.table-bordered {
-    border: 0;
-  }
-
-  &.table-striped {
-    tbody tr:nth-of-type(odd) {
-      background-color: $table-dark-accent-bg;
-    }
-  }
-
-  &.table-hover {
-    tbody tr {
-      @include hover {
-        background-color: $table-dark-hover-bg;
-      }
-    }
-  }
-}
-
-
-// Responsive tables
-//
-// Generate series of `.table-responsive-*` classes for configuring the screen
-// size of where your table will overflow.
-
-.table-responsive {
-  @each $breakpoint in map-keys($grid-breakpoints) {
-    $next: breakpoint-next($breakpoint, $grid-breakpoints);
-    $infix: breakpoint-infix($next, $grid-breakpoints);
-
-    &#{$infix} {
-      @include media-breakpoint-down($breakpoint) {
-        display: block;
-        width: 100%;
-        overflow-x: auto;
-        -webkit-overflow-scrolling: touch;
-        -ms-overflow-style: -ms-autohiding-scrollbar; // See https://github.com/twbs/bootstrap/pull/10057
-
-        // Prevent double border on horizontal scroll due to use of `display: block;`
-        > .table-bordered {
-          border: 0;
-        }
-      }
-    }
-  }
-}
diff --git a/scss/bootstrap/_toasts.scss b/scss/bootstrap/_toasts.scss
deleted file mode 100644
index d6ba4ca141..0000000000
--- a/scss/bootstrap/_toasts.scss
+++ /dev/null
@@ -1,34 +0,0 @@
-.toast {
-  display: none;
-  max-width: $toast-max-width;
-  overflow: hidden; // cheap rounded corners on nested items
-  font-size: $toast-font-size; // knock it down to 14px
-  background-color: $toast-background-color;
-  background-clip: padding-box;
-  border: $toast-border-width solid $toast-border-color;
-  border-radius: $toast-border-radius;
-  box-shadow: $toast-box-shadow;
-  backdrop-filter: blur(10px);
-
-  + .toast {
-    margin-top: $toast-padding-x;
-  }
-
-  &.show {
-    display: block;
-  }
-}
-
-.toast-header {
-  display: flex;
-  align-items: center;
-  padding: $toast-padding-y $toast-padding-x;
-  color: $toast-header-color;
-  background-color: $toast-header-background-color;
-  background-clip: padding-box;
-  border-bottom: $toast-border-width solid $toast-header-border-color;
-}
-
-.toast-body {
-  padding: $toast-padding-x; // apply to both vertical and horizontal
-}
diff --git a/scss/bootstrap/_tooltip.scss b/scss/bootstrap/_tooltip.scss
deleted file mode 100644
index 1286ebfcf9..0000000000
--- a/scss/bootstrap/_tooltip.scss
+++ /dev/null
@@ -1,115 +0,0 @@
-// Base class
-.tooltip {
-  position: absolute;
-  z-index: $zindex-tooltip;
-  display: block;
-  margin: $tooltip-margin;
-  // Our parent element can be arbitrary since tooltips are by default inserted as a sibling of their target element.
-  // So reset our font and text properties to avoid inheriting weird values.
-  @include reset-text();
-  font-size: $tooltip-font-size;
-  // Allow breaking very long words so they don't overflow the tooltip's bounds
-  word-wrap: break-word;
-  opacity: 0;
-
-  &.show { opacity: $tooltip-opacity; }
-
-  .arrow {
-    position: absolute;
-    display: block;
-    width: $tooltip-arrow-width;
-    height: $tooltip-arrow-height;
-
-    &::before {
-      position: absolute;
-      content: "";
-      border-color: transparent;
-      border-style: solid;
-    }
-  }
-}
-
-.bs-tooltip-top {
-  padding: $tooltip-arrow-height 0;
-
-  .arrow {
-    bottom: 0;
-
-    &::before {
-      top: 0;
-      border-width: $tooltip-arrow-height ($tooltip-arrow-width / 2) 0;
-      border-top-color: $tooltip-arrow-color;
-    }
-  }
-}
-
-.bs-tooltip-right {
-  padding: 0 $tooltip-arrow-height;
-
-  .arrow {
-    left: 0;
-    width: $tooltip-arrow-height;
-    height: $tooltip-arrow-width;
-
-    &::before {
-      right: 0;
-      border-width: ($tooltip-arrow-width / 2) $tooltip-arrow-height ($tooltip-arrow-width / 2) 0;
-      border-right-color: $tooltip-arrow-color;
-    }
-  }
-}
-
-.bs-tooltip-bottom {
-  padding: $tooltip-arrow-height 0;
-
-  .arrow {
-    top: 0;
-
-    &::before {
-      bottom: 0;
-      border-width: 0 ($tooltip-arrow-width / 2) $tooltip-arrow-height;
-      border-bottom-color: $tooltip-arrow-color;
-    }
-  }
-}
-
-.bs-tooltip-left {
-  padding: 0 $tooltip-arrow-height;
-
-  .arrow {
-    right: 0;
-    width: $tooltip-arrow-height;
-    height: $tooltip-arrow-width;
-
-    &::before {
-      left: 0;
-      border-width: ($tooltip-arrow-width / 2) 0 ($tooltip-arrow-width / 2) $tooltip-arrow-height;
-      border-left-color: $tooltip-arrow-color;
-    }
-  }
-}
-
-.bs-tooltip-auto {
-  &[x-placement^="top"] {
-    @extend .bs-tooltip-top;
-  }
-  &[x-placement^="right"] {
-    @extend .bs-tooltip-right;
-  }
-  &[x-placement^="bottom"] {
-    @extend .bs-tooltip-bottom;
-  }
-  &[x-placement^="left"] {
-    @extend .bs-tooltip-left;
-  }
-}
-
-// Wrapper for the tooltip content
-.tooltip-inner {
-  max-width: $tooltip-max-width;
-  padding: $tooltip-padding-y $tooltip-padding-x;
-  color: $tooltip-color;
-  text-align: center;
-  background-color: $tooltip-bg;
-  @include border-radius($tooltip-border-radius);
-}
diff --git a/scss/bootstrap/_transitions.scss b/scss/bootstrap/_transitions.scss
deleted file mode 100644
index c8d91e2717..0000000000
--- a/scss/bootstrap/_transitions.scss
+++ /dev/null
@@ -1,22 +0,0 @@
-// stylelint-disable selector-no-qualifying-type
-
-.fade {
-  @include transition($transition-fade);
-
-  &:not(.show) {
-    opacity: 0;
-  }
-}
-
-.collapse {
-  &:not(.show) {
-    display: none;
-  }
-}
-
-.collapsing {
-  position: relative;
-  height: 0;
-  overflow: hidden;
-  @include transition($transition-collapse);
-}
diff --git a/scss/bootstrap/_type.scss b/scss/bootstrap/_type.scss
deleted file mode 100644
index 37dd967328..0000000000
--- a/scss/bootstrap/_type.scss
+++ /dev/null
@@ -1,125 +0,0 @@
-// stylelint-disable declaration-no-important, selector-list-comma-newline-after
-
-//
-// Headings
-//
-
-h1, h2, h3, h4, h5, h6,
-.h1, .h2, .h3, .h4, .h5, .h6 {
-  margin-bottom: $headings-margin-bottom;
-  font-family: $headings-font-family;
-  font-weight: $headings-font-weight;
-  line-height: $headings-line-height;
-  color: $headings-color;
-}
-
-h1, .h1 { font-size: $h1-font-size; }
-h2, .h2 { font-size: $h2-font-size; }
-h3, .h3 { font-size: $h3-font-size; }
-h4, .h4 { font-size: $h4-font-size; }
-h5, .h5 { font-size: $h5-font-size; }
-h6, .h6 { font-size: $h6-font-size; }
-
-.lead {
-  font-size: $lead-font-size;
-  font-weight: $lead-font-weight;
-}
-
-// Type display classes
-.display-1 {
-  font-size: $display1-size;
-  font-weight: $display1-weight;
-  line-height: $display-line-height;
-}
-.display-2 {
-  font-size: $display2-size;
-  font-weight: $display2-weight;
-  line-height: $display-line-height;
-}
-.display-3 {
-  font-size: $display3-size;
-  font-weight: $display3-weight;
-  line-height: $display-line-height;
-}
-.display-4 {
-  font-size: $display4-size;
-  font-weight: $display4-weight;
-  line-height: $display-line-height;
-}
-
-
-//
-// Horizontal rules
-//
-
-hr {
-  margin-top: $hr-margin-y;
-  margin-bottom: $hr-margin-y;
-  border: 0;
-  border-top: $hr-border-width solid $hr-border-color;
-}
-
-
-//
-// Emphasis
-//
-
-small,
-.small {
-  font-size: $small-font-size;
-  font-weight: $font-weight-normal;
-}
-
-mark,
-.mark {
-  padding: $mark-padding;
-  background-color: $mark-bg;
-}
-
-
-//
-// Lists
-//
-
-.list-unstyled {
-  @include list-unstyled;
-}
-
-// Inline turns list items into inline-block
-.list-inline {
-  @include list-unstyled;
-}
-.list-inline-item {
-  display: inline-block;
-
-  &:not(:last-child) {
-    margin-right: $list-inline-padding;
-  }
-}
-
-
-//
-// Misc
-//
-
-// Builds on `abbr`
-.initialism {
-  font-size: 90%;
-  text-transform: uppercase;
-}
-
-// Blockquotes
-.blockquote {
-  margin-bottom: $spacer;
-  font-size: $blockquote-font-size;
-}
-
-.blockquote-footer {
-  display: block;
-  font-size: $blockquote-small-font-size;
-  color: $blockquote-small-color;
-
-  &::before {
-    content: "\2014\00A0"; // em dash, nbsp
-  }
-}
diff --git a/scss/bootstrap/_utilities.scss b/scss/bootstrap/_utilities.scss
deleted file mode 100644
index 913fb852d5..0000000000
--- a/scss/bootstrap/_utilities.scss
+++ /dev/null
@@ -1,16 +0,0 @@
-@import "utilities/align";
-@import "utilities/background";
-@import "utilities/borders";
-@import "utilities/clearfix";
-@import "utilities/display";
-@import "utilities/embed";
-@import "utilities/flex";
-@import "utilities/float";
-@import "utilities/overflow";
-@import "utilities/position";
-@import "utilities/screenreaders";
-@import "utilities/shadows";
-@import "utilities/sizing";
-@import "utilities/spacing";
-@import "utilities/text";
-@import "utilities/visibility";
diff --git a/scss/bootstrap/_variables.scss b/scss/bootstrap/_variables.scss
deleted file mode 100644
index 9af83298f5..0000000000
--- a/scss/bootstrap/_variables.scss
+++ /dev/null
@@ -1,1088 +0,0 @@
-// Variables
-//
-// Variables should follow the `$component-state-property-size` formula for
-// consistent naming. Ex: $nav-link-disabled-color and $modal-content-box-shadow-xs.
-
-// Color system
-
-@import "functions";
-
-$white:    #fff !default;
-$gray-100: #f8f9fa !default;
-$gray-200: #e9ecef !default;
-$gray-300: #dee2e6 !default;
-$gray-400: #ced4da !default;
-$gray-500: #adb5bd !default;
-$gray-600: #6c757d !default;
-$gray-700: #495057 !default;
-$gray-800: #343a40 !default;
-$gray-900: #212529 !default;
-$black:    #000 !default;
-
-$grays: () !default;
-// stylelint-disable-next-line scss/dollar-variable-default
-$grays: map-merge(
-  (
-    "100": $gray-100,
-    "200": $gray-200,
-    "300": $gray-300,
-    "400": $gray-400,
-    "500": $gray-500,
-    "600": $gray-600,
-    "700": $gray-700,
-    "800": $gray-800,
-    "900": $gray-900
-  ),
-  $grays
-);
-
-$blue:    #007bff !default;
-$indigo:  #6610f2 !default;
-$purple:  #6f42c1 !default;
-$pink:    #e83e8c !default;
-$red:     #dc3545 !default;
-$orange:  #fd7e14 !default;
-$yellow:  #ffc107 !default;
-$green:   #28a745 !default;
-$teal:    #20c997 !default;
-$cyan:    #17a2b8 !default;
-
-$colors: () !default;
-// stylelint-disable-next-line scss/dollar-variable-default
-$colors: map-merge(
-  (
-    "blue":       $blue,
-    "indigo":     $indigo,
-    "purple":     $purple,
-    "pink":       $pink,
-    "red":        $red,
-    "orange":     $orange,
-    "yellow":     $yellow,
-    "green":      $green,
-    "teal":       $teal,
-    "cyan":       $cyan,
-    "white":      $white,
-    "gray":       $gray-600,
-    "gray-dark":  $gray-800
-  ),
-  $colors
-);
-
-$primary:       $blue !default;
-$secondary:     $gray-600 !default;
-$success:       $green !default;
-$info:          $cyan !default;
-$warning:       $yellow !default;
-$danger:        $red !default;
-$light:         $gray-100 !default;
-$dark:          $gray-800 !default;
-
-$theme-colors: () !default;
-// stylelint-disable-next-line scss/dollar-variable-default
-$theme-colors: map-merge(
-  (
-    "primary":    $primary,
-    "secondary":  $secondary,
-    "success":    $success,
-    "info":       $info,
-    "warning":    $warning,
-    "danger":     $danger,
-    "light":      $light,
-    "dark":       $dark
-  ),
-  $theme-colors
-);
-
-// Set a specific jump point for requesting color jumps
-$theme-color-interval:      8% !default;
-
-// The yiq lightness value that determines when the lightness of color changes from "dark" to "light". Acceptable values are between 0 and 255.
-$yiq-contrasted-threshold:  150 !default;
-
-// Customize the light and dark text colors for use in our YIQ color contrast function.
-$yiq-text-dark:             $gray-900 !default;
-$yiq-text-light:            $white !default;
-
-
-// Options
-//
-// Quickly modify global styling by enabling or disabling optional features.
-
-$enable-caret:                                true !default;
-$enable-rounded:                              true !default;
-$enable-shadows:                              false !default;
-$enable-gradients:                            false !default;
-$enable-transitions:                          true !default;
-$enable-prefers-reduced-motion-media-query:   true !default;
-$enable-hover-media-query:                    false !default; // Deprecated, no longer affects any compiled CSS
-$enable-grid-classes:                         true !default;
-$enable-print-styles:                         true !default;
-$enable-validation-icons:                     true !default;
-
-
-// Spacing
-//
-// Control the default styling of most Bootstrap elements by modifying these
-// variables. Mostly focused on spacing.
-// You can add more entries to the $spacers map, should you need more variation.
-
-$spacer: 1rem !default;
-$spacers: () !default;
-// stylelint-disable-next-line scss/dollar-variable-default
-$spacers: map-merge(
-  (
-    0: 0,
-    1: ($spacer * .25),
-    2: ($spacer * .5),
-    3: $spacer,
-    4: ($spacer * 1.5),
-    5: ($spacer * 3)
-  ),
-  $spacers
-);
-
-// This variable affects the `.h-*` and `.w-*` classes.
-$sizes: () !default;
-// stylelint-disable-next-line scss/dollar-variable-default
-$sizes: map-merge(
-  (
-    25: 25%,
-    50: 50%,
-    75: 75%,
-    100: 100%,
-    auto: auto
-  ),
-  $sizes
-);
-
-
-// Body
-//
-// Settings for the `<body>` element.
-
-$body-bg:                   $white !default;
-$body-color:                $gray-900 !default;
-
-
-// Links
-//
-// Style anchor elements.
-
-$link-color:                              $primary !default;
-$link-decoration:                         none !default;
-$link-hover-color:                        darken($link-color, 15%) !default;
-$link-hover-decoration:                   underline !default;
-// Darken percentage for links with `.text-*` class (e.g. `.text-success`)
-$emphasized-link-hover-darken-percentage: 15% !default;
-
-// Paragraphs
-//
-// Style p element.
-
-$paragraph-margin-bottom:   1rem !default;
-
-
-// Grid breakpoints
-//
-// Define the minimum dimensions at which your layout will change,
-// adapting to different screen sizes, for use in media queries.
-
-$grid-breakpoints: () !default;
-// stylelint-disable-next-line scss/dollar-variable-default
-$grid-breakpoints: map-merge(
-  (
-    xs: 0,
-    sm: 576px,
-    md: 768px,
-    lg: 992px,
-    xl: 1200px
-  ),
-  $grid-breakpoints
-);
-
-@include _assert-ascending($grid-breakpoints, "$grid-breakpoints");
-@include _assert-starts-at-zero($grid-breakpoints);
-
-
-// Grid containers
-//
-// Define the maximum width of `.container` for different screen sizes.
-
-$container-max-widths: () !default;
-// stylelint-disable-next-line scss/dollar-variable-default
-$container-max-widths: map-merge(
-  (
-    sm: 540px,
-    md: 720px,
-    lg: 960px,
-    xl: 1140px
-  ),
-  $container-max-widths
-);
-
-@include _assert-ascending($container-max-widths, "$container-max-widths");
-
-
-// Grid columns
-//
-// Set the number of columns and specify the width of the gutters.
-
-$grid-columns:                12 !default;
-$grid-gutter-width:           30px !default;
-
-
-// Components
-//
-// Define common padding and border radius sizes and more.
-
-$line-height-lg:              1.5 !default;
-$line-height-sm:              1.5 !default;
-
-$border-width:                1px !default;
-$border-color:                $gray-300 !default;
-
-$border-radius:               .25rem !default;
-$border-radius-lg:            .3rem !default;
-$border-radius-sm:            .2rem !default;
-
-$rounded-pill:                50rem !default;
-
-$box-shadow-sm:               0 .125rem .25rem rgba($black, .075) !default;
-$box-shadow:                  0 .5rem 1rem rgba($black, .15) !default;
-$box-shadow-lg:               0 1rem 3rem rgba($black, .175) !default;
-
-$component-active-color:      $white !default;
-$component-active-bg:         $primary !default;
-
-$caret-width:                 .3em !default;
-
-$transition-base:             all .2s ease-in-out !default;
-$transition-fade:             opacity .15s linear !default;
-$transition-collapse:         height .35s ease !default;
-
-$embed-responsive-aspect-ratios: () !default;
-// stylelint-disable-next-line scss/dollar-variable-default
-$embed-responsive-aspect-ratios: join(
-  (
-    (21 9),
-    (16 9),
-    (3 4),
-    (1 1),
-  ),
-  $embed-responsive-aspect-ratios
-);
-
-// Fonts
-//
-// Font, line-height, and color for body text, headings, and more.
-
-// stylelint-disable value-keyword-case
-$font-family-sans-serif:      -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, Noto Sans, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji" !default;
-$font-family-monospace:       SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace !default;
-$font-family-base:            $font-family-sans-serif !default;
-// stylelint-enable value-keyword-case
-
-$font-size-base:              1rem !default; // Assumes the browser default, typically `16px`
-$font-size-lg:                ($font-size-base * 1.25) !default;
-$font-size-sm:                ($font-size-base * .875) !default;
-
-$font-weight-lighter:         lighter !default;
-$font-weight-light:           300 !default;
-$font-weight-normal:          400 !default;
-$font-weight-bold:            700 !default;
-$font-weight-bolder:          bolder !default;
-
-$font-weight-base:            $font-weight-normal !default;
-$line-height-base:            1.5 !default;
-
-$h1-font-size:                $font-size-base * 2.5 !default;
-$h2-font-size:                $font-size-base * 2 !default;
-$h3-font-size:                $font-size-base * 1.75 !default;
-$h4-font-size:                $font-size-base * 1.5 !default;
-$h5-font-size:                $font-size-base * 1.25 !default;
-$h6-font-size:                $font-size-base !default;
-
-$headings-margin-bottom:      ($spacer / 2) !default;
-$headings-font-family:        inherit !default;
-$headings-font-weight:        500 !default;
-$headings-line-height:        1.2 !default;
-$headings-color:              inherit !default;
-
-$display1-size:               6rem !default;
-$display2-size:               5.5rem !default;
-$display3-size:               4.5rem !default;
-$display4-size:               3.5rem !default;
-
-$display1-weight:             300 !default;
-$display2-weight:             300 !default;
-$display3-weight:             300 !default;
-$display4-weight:             300 !default;
-$display-line-height:         $headings-line-height !default;
-
-$lead-font-size:              ($font-size-base * 1.25) !default;
-$lead-font-weight:            300 !default;
-
-$small-font-size:             80% !default;
-
-$text-muted:                  $gray-600 !default;
-
-$blockquote-small-color:      $gray-600 !default;
-$blockquote-small-font-size:  $small-font-size !default;
-$blockquote-font-size:        ($font-size-base * 1.25) !default;
-
-$hr-border-color:             rgba($black, .1) !default;
-$hr-border-width:             $border-width !default;
-
-$mark-padding:                .2em !default;
-
-$dt-font-weight:              $font-weight-bold !default;
-
-$kbd-box-shadow:              inset 0 -.1rem 0 rgba($black, .25) !default;
-$nested-kbd-font-weight:      $font-weight-bold !default;
-
-$list-inline-padding:         .5rem !default;
-
-$mark-bg:                     #fcf8e3 !default;
-
-$hr-margin-y:                 $spacer !default;
-
-
-// Tables
-//
-// Customizes the `.table` component with basic values, each used across all table variations.
-
-$table-cell-padding:          .75rem !default;
-$table-cell-padding-sm:       .3rem !default;
-
-$table-bg:                    transparent !default;
-$table-accent-bg:             rgba($black, .05) !default;
-$table-hover-bg:              rgba($black, .075) !default;
-$table-active-bg:             $table-hover-bg !default;
-
-$table-border-width:          $border-width !default;
-$table-border-color:          $gray-300 !default;
-
-$table-head-bg:               $gray-200 !default;
-$table-head-color:            $gray-700 !default;
-
-$table-dark-bg:               $gray-900 !default;
-$table-dark-accent-bg:        rgba($white, .05) !default;
-$table-dark-hover-bg:         rgba($white, .075) !default;
-$table-dark-border-color:     lighten($gray-900, 7.5%) !default;
-$table-dark-color:            $white !default;
-
-$table-striped-order:         odd !default;
-
-$table-caption-color:         $text-muted !default;
-
-$table-bg-level:              -9 !default;
-$table-border-level:          -6 !default;
-
-
-// Buttons + Forms
-//
-// Shared variables that are reassigned to `$input-` and `$btn-` specific variables.
-
-$input-btn-padding-y:         .375rem !default;
-$input-btn-padding-x:         .75rem !default;
-$input-btn-font-size:         $font-size-base !default;
-$input-btn-line-height:       $line-height-base !default;
-
-$input-btn-focus-width:       .2rem !default;
-$input-btn-focus-color:       rgba($component-active-bg, .25) !default;
-$input-btn-focus-box-shadow:  0 0 0 $input-btn-focus-width $input-btn-focus-color !default;
-
-$input-btn-padding-y-sm:      .25rem !default;
-$input-btn-padding-x-sm:      .5rem !default;
-$input-btn-font-size-sm:      $font-size-sm !default;
-$input-btn-line-height-sm:    $line-height-sm !default;
-
-$input-btn-padding-y-lg:      .5rem !default;
-$input-btn-padding-x-lg:      1rem !default;
-$input-btn-font-size-lg:      $font-size-lg !default;
-$input-btn-line-height-lg:    $line-height-lg !default;
-
-$input-btn-border-width:      $border-width !default;
-
-
-// Buttons
-//
-// For each of Bootstrap's buttons, define text, background, and border color.
-
-$btn-padding-y:               $input-btn-padding-y !default;
-$btn-padding-x:               $input-btn-padding-x !default;
-$btn-font-size:               $input-btn-font-size !default;
-$btn-line-height:             $input-btn-line-height !default;
-
-$btn-padding-y-sm:            $input-btn-padding-y-sm !default;
-$btn-padding-x-sm:            $input-btn-padding-x-sm !default;
-$btn-font-size-sm:            $input-btn-font-size-sm !default;
-$btn-line-height-sm:          $input-btn-line-height-sm !default;
-
-$btn-padding-y-lg:            $input-btn-padding-y-lg !default;
-$btn-padding-x-lg:            $input-btn-padding-x-lg !default;
-$btn-font-size-lg:            $input-btn-font-size-lg !default;
-$btn-line-height-lg:          $input-btn-line-height-lg !default;
-
-$btn-border-width:            $input-btn-border-width !default;
-
-$btn-font-weight:             $font-weight-normal !default;
-$btn-box-shadow:              inset 0 1px 0 rgba($white, .15), 0 1px 1px rgba($black, .075) !default;
-$btn-focus-width:             $input-btn-focus-width !default;
-$btn-focus-box-shadow:        $input-btn-focus-box-shadow !default;
-$btn-disabled-opacity:        .65 !default;
-$btn-active-box-shadow:       inset 0 3px 5px rgba($black, .125) !default;
-
-$btn-link-disabled-color:     $gray-600 !default;
-
-$btn-block-spacing-y:         .5rem !default;
-
-// Allows for customizing button radius independently from global border radius
-$btn-border-radius:           $border-radius !default;
-$btn-border-radius-lg:        $border-radius-lg !default;
-$btn-border-radius-sm:        $border-radius-sm !default;
-
-$btn-transition:              color .15s ease-in-out, background-color .15s ease-in-out, border-color .15s ease-in-out, box-shadow .15s ease-in-out !default;
-
-
-// Forms
-
-$label-margin-bottom:                   .5rem !default;
-
-$input-padding-y:                       $input-btn-padding-y !default;
-$input-padding-x:                       $input-btn-padding-x !default;
-$input-font-size:                       $input-btn-font-size !default;
-$input-font-weight:                     $font-weight-base !default;
-$input-line-height:                     $input-btn-line-height !default;
-
-$input-padding-y-sm:                    $input-btn-padding-y-sm !default;
-$input-padding-x-sm:                    $input-btn-padding-x-sm !default;
-$input-font-size-sm:                    $input-btn-font-size-sm !default;
-$input-line-height-sm:                  $input-btn-line-height-sm !default;
-
-$input-padding-y-lg:                    $input-btn-padding-y-lg !default;
-$input-padding-x-lg:                    $input-btn-padding-x-lg !default;
-$input-font-size-lg:                    $input-btn-font-size-lg !default;
-$input-line-height-lg:                  $input-btn-line-height-lg !default;
-
-$input-bg:                              $white !default;
-$input-disabled-bg:                     $gray-200 !default;
-
-$input-color:                           $gray-700 !default;
-$input-border-color:                    $gray-400 !default;
-$input-border-width:                    $input-btn-border-width !default;
-$input-box-shadow:                      inset 0 1px 1px rgba($black, .075) !default;
-
-$input-border-radius:                   $border-radius !default;
-$input-border-radius-lg:                $border-radius-lg !default;
-$input-border-radius-sm:                $border-radius-sm !default;
-
-$input-focus-bg:                        $input-bg !default;
-$input-focus-border-color:              lighten($component-active-bg, 25%) !default;
-$input-focus-color:                     $input-color !default;
-$input-focus-width:                     $input-btn-focus-width !default;
-$input-focus-box-shadow:                $input-btn-focus-box-shadow !default;
-
-$input-placeholder-color:               $gray-600 !default;
-$input-plaintext-color:                 $body-color !default;
-
-$input-height-border:                   $input-border-width * 2 !default;
-
-$input-height-inner:                    ($input-btn-font-size * $input-btn-line-height) + ($input-btn-padding-y * 2) !default;
-$input-height:                          calc(#{$input-height-inner} + #{$input-height-border}) !default;
-
-$input-height-inner-sm:                 ($input-btn-font-size-sm * $input-btn-line-height-sm) + ($input-btn-padding-y-sm * 2) !default;
-$input-height-sm:                       calc(#{$input-height-inner-sm} + #{$input-height-border}) !default;
-
-$input-height-inner-lg:                 ($input-btn-font-size-lg * $input-btn-line-height-lg) + ($input-btn-padding-y-lg * 2) !default;
-$input-height-lg:                       calc(#{$input-height-inner-lg} + #{$input-height-border}) !default;
-
-$input-transition:                      border-color .15s ease-in-out, box-shadow .15s ease-in-out !default;
-
-$form-text-margin-top:                  .25rem !default;
-
-$form-check-input-gutter:               1.25rem !default;
-$form-check-input-margin-y:             .3rem !default;
-$form-check-input-margin-x:             .25rem !default;
-
-$form-check-inline-margin-x:            .75rem !default;
-$form-check-inline-input-margin-x:      .3125rem !default;
-
-$form-group-margin-bottom:              1rem !default;
-
-$input-group-addon-color:               $input-color !default;
-$input-group-addon-bg:                  $gray-200 !default;
-$input-group-addon-border-color:        $input-border-color !default;
-
-$custom-forms-transition:               background-color .15s ease-in-out, border-color .15s ease-in-out, box-shadow .15s ease-in-out !default;
-
-$custom-control-gutter:                 1.5rem !default;
-$custom-control-spacer-x:               1rem !default;
-
-$custom-control-indicator-size:         1rem !default;
-$custom-control-indicator-bg:           $input-bg !default;
-
-$custom-control-indicator-bg-size:      50% 50% !default;
-$custom-control-indicator-box-shadow:   $input-box-shadow !default;
-$custom-control-indicator-border-color: $gray-500 !default;
-$custom-control-indicator-border-width: $input-border-width !default;
-
-$custom-control-indicator-disabled-bg:          $input-disabled-bg !default;
-$custom-control-label-disabled-color:           $gray-600 !default;
-
-$custom-control-indicator-checked-color:        $component-active-color !default;
-$custom-control-indicator-checked-bg:           $component-active-bg !default;
-$custom-control-indicator-checked-disabled-bg:  rgba($primary, .5) !default;
-$custom-control-indicator-checked-box-shadow:   none !default;
-$custom-control-indicator-checked-border-color: $custom-control-indicator-checked-bg !default;
-
-$custom-control-indicator-focus-box-shadow:     $input-btn-focus-box-shadow !default;
-$custom-control-indicator-focus-border-color:   $input-focus-border-color !default;
-
-$custom-control-indicator-active-color:         $component-active-color !default;
-$custom-control-indicator-active-bg:            lighten($component-active-bg, 35%) !default;
-$custom-control-indicator-active-box-shadow:    none !default;
-$custom-control-indicator-active-border-color:  $custom-control-indicator-active-bg !default;
-
-$custom-checkbox-indicator-border-radius:       $border-radius !default;
-$custom-checkbox-indicator-icon-checked:        str-replace(url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='#{$custom-control-indicator-checked-color}' d='M6.564.75l-3.59 3.612-1.538-1.55L0 4.26 2.974 7.25 8 2.193z'/%3e%3c/svg%3e"), "#", "%23") !default;
-
-$custom-checkbox-indicator-indeterminate-bg:           $component-active-bg !default;
-$custom-checkbox-indicator-indeterminate-color:        $custom-control-indicator-checked-color !default;
-$custom-checkbox-indicator-icon-indeterminate:         str-replace(url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 4 4'%3e%3cpath stroke='#{$custom-checkbox-indicator-indeterminate-color}' d='M0 2h4'/%3e%3c/svg%3e"), "#", "%23") !default;
-$custom-checkbox-indicator-indeterminate-box-shadow:   none !default;
-$custom-checkbox-indicator-indeterminate-border-color: $custom-checkbox-indicator-indeterminate-bg !default;
-
-$custom-radio-indicator-border-radius:          50% !default;
-$custom-radio-indicator-icon-checked:           str-replace(url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='#{$custom-control-indicator-checked-color}'/%3e%3c/svg%3e"), "#", "%23") !default;
-
-$custom-select-padding-y:           $input-btn-padding-y !default;
-$custom-select-padding-x:           $input-btn-padding-x !default;
-$custom-select-height:              $input-height !default;
-$custom-select-indicator-padding:   1rem !default; // Extra padding to account for the presence of the background-image based indicator
-$custom-select-font-weight:         $input-font-weight !default;
-$custom-select-line-height:         $input-line-height !default;
-$custom-select-color:               $input-color !default;
-$custom-select-disabled-color:      $gray-600 !default;
-$custom-select-bg:                  $input-bg !default;
-$custom-select-disabled-bg:         $gray-200 !default;
-$custom-select-bg-size:             8px 10px !default; // In pixels because image dimensions
-$custom-select-indicator-color:     $gray-800 !default;
-$custom-select-indicator:           str-replace(url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 4 5'%3e%3cpath fill='#{$custom-select-indicator-color}' d='M2 0L0 2h4zm0 5L0 3h4z'/%3e%3c/svg%3e"), "#", "%23") !default;
-$custom-select-background:          $custom-select-indicator no-repeat right $custom-select-padding-x center / $custom-select-bg-size !default; // Used so we can have multiple background elements (e.g., arrow and feedback icon)
-
-$custom-select-feedback-icon-padding-right: $input-height-inner * 3 / 4 + $custom-select-padding-x + $custom-select-indicator-padding !default;
-$custom-select-feedback-icon-position:      center right ($custom-select-padding-x + $custom-select-indicator-padding) !default;
-$custom-select-feedback-icon-size:          ($input-height-inner / 2) ($input-height-inner / 2) !default;
-
-$custom-select-border-width:        $input-border-width !default;
-$custom-select-border-color:        $input-border-color !default;
-$custom-select-border-radius:       $border-radius !default;
-$custom-select-box-shadow:          inset 0 1px 2px rgba($black, .075) !default;
-
-$custom-select-focus-border-color:  $input-focus-border-color !default;
-$custom-select-focus-width:         $input-focus-width !default;
-$custom-select-focus-box-shadow:    0 0 0 $custom-select-focus-width rgba($custom-select-focus-border-color, .5) !default;
-
-$custom-select-padding-y-sm:        $input-padding-y-sm !default;
-$custom-select-padding-x-sm:        $input-padding-x-sm !default;
-$custom-select-font-size-sm:        $input-btn-font-size-sm !default;
-$custom-select-height-sm:           $input-height-sm !default;
-
-$custom-select-padding-y-lg:        $input-padding-y-lg !default;
-$custom-select-padding-x-lg:        $input-padding-x-lg !default;
-$custom-select-font-size-lg:        $input-btn-font-size-lg !default;
-$custom-select-height-lg:           $input-height-lg !default;
-
-$custom-range-track-width:          100% !default;
-$custom-range-track-height:         .5rem !default;
-$custom-range-track-cursor:         pointer !default;
-$custom-range-track-bg:             $gray-300 !default;
-$custom-range-track-border-radius:  1rem !default;
-$custom-range-track-box-shadow:     inset 0 .25rem .25rem rgba($black, .1) !default;
-
-$custom-range-thumb-width:                   1rem !default;
-$custom-range-thumb-height:                  $custom-range-thumb-width !default;
-$custom-range-thumb-bg:                      $component-active-bg !default;
-$custom-range-thumb-border:                  0 !default;
-$custom-range-thumb-border-radius:           1rem !default;
-$custom-range-thumb-box-shadow:              0 .1rem .25rem rgba($black, .1) !default;
-$custom-range-thumb-focus-box-shadow:        0 0 0 1px $body-bg, $input-focus-box-shadow !default;
-$custom-range-thumb-focus-box-shadow-width:  $input-focus-width !default; // For focus box shadow issue in IE/Edge
-$custom-range-thumb-active-bg:               lighten($component-active-bg, 35%) !default;
-$custom-range-thumb-disabled-bg:             $gray-500 !default;
-
-$custom-file-height:                $input-height !default;
-$custom-file-height-inner:          $input-height-inner !default;
-$custom-file-focus-border-color:    $input-focus-border-color !default;
-$custom-file-focus-box-shadow:      $input-focus-box-shadow !default;
-$custom-file-disabled-bg:           $input-disabled-bg !default;
-
-$custom-file-padding-y:             $input-padding-y !default;
-$custom-file-padding-x:             $input-padding-x !default;
-$custom-file-line-height:           $input-line-height !default;
-$custom-file-font-weight:           $input-font-weight !default;
-$custom-file-color:                 $input-color !default;
-$custom-file-bg:                    $input-bg !default;
-$custom-file-border-width:          $input-border-width !default;
-$custom-file-border-color:          $input-border-color !default;
-$custom-file-border-radius:         $input-border-radius !default;
-$custom-file-box-shadow:            $input-box-shadow !default;
-$custom-file-button-color:          $custom-file-color !default;
-$custom-file-button-bg:             $input-group-addon-bg !default;
-$custom-file-text: (
-  en: "Browse"
-) !default;
-
-
-// Form validation
-
-$form-feedback-margin-top:          $form-text-margin-top !default;
-$form-feedback-font-size:           $small-font-size !default;
-$form-feedback-valid-color:         $success !default;
-$form-feedback-invalid-color:       $danger !default;
-
-$form-feedback-icon-valid-color:    $form-feedback-valid-color !default;
-$form-feedback-icon-valid:          str-replace(url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='#{$form-feedback-icon-valid-color}' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e"), "#", "%23") !default;
-$form-feedback-icon-invalid-color:  $form-feedback-invalid-color !default;
-$form-feedback-icon-invalid:        str-replace(url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='#{$form-feedback-icon-invalid-color}' viewBox='-2 -2 7 7'%3e%3cpath stroke='%23d9534f' d='M0 0l3 3m0-3L0 3'/%3e%3ccircle r='.5'/%3e%3ccircle cx='3' r='.5'/%3e%3ccircle cy='3' r='.5'/%3e%3ccircle cx='3' cy='3' r='.5'/%3e%3c/svg%3E"), "#", "%23") !default;
-
-
-// Dropdowns
-//
-// Dropdown menu container and contents.
-
-$dropdown-min-width:                10rem !default;
-$dropdown-padding-y:                .5rem !default;
-$dropdown-spacer:                   .125rem !default;
-$dropdown-bg:                       $white !default;
-$dropdown-border-color:             rgba($black, .15) !default;
-$dropdown-border-radius:            $border-radius !default;
-$dropdown-border-width:             $border-width !default;
-$dropdown-inner-border-radius:      calc(#{$dropdown-border-radius} - #{$dropdown-border-width}) !default;
-$dropdown-divider-bg:               $gray-200 !default;
-$dropdown-box-shadow:               0 .5rem 1rem rgba($black, .175) !default;
-
-$dropdown-link-color:               $gray-900 !default;
-$dropdown-link-hover-color:         darken($gray-900, 5%) !default;
-$dropdown-link-hover-bg:            $gray-100 !default;
-
-$dropdown-link-active-color:        $component-active-color !default;
-$dropdown-link-active-bg:           $component-active-bg !default;
-
-$dropdown-link-disabled-color:      $gray-600 !default;
-
-$dropdown-item-padding-y:           .25rem !default;
-$dropdown-item-padding-x:           1.5rem !default;
-
-$dropdown-header-color:             $gray-600 !default;
-
-
-// Z-index master list
-//
-// Warning: Avoid customizing these values. They're used for a bird's eye view
-// of components dependent on the z-axis and are designed to all work together.
-
-$zindex-dropdown:                   1000 !default;
-$zindex-sticky:                     1020 !default;
-$zindex-fixed:                      1030 !default;
-$zindex-modal-backdrop:             1040 !default;
-$zindex-modal:                      1050 !default;
-$zindex-popover:                    1060 !default;
-$zindex-tooltip:                    1070 !default;
-
-
-// Navs
-
-$nav-link-padding-y:                .5rem !default;
-$nav-link-padding-x:                1rem !default;
-$nav-link-disabled-color:           $gray-600 !default;
-
-$nav-tabs-border-color:             $gray-300 !default;
-$nav-tabs-border-width:             $border-width !default;
-$nav-tabs-border-radius:            $border-radius !default;
-$nav-tabs-link-hover-border-color:  $gray-200 $gray-200 $nav-tabs-border-color !default;
-$nav-tabs-link-active-color:        $gray-700 !default;
-$nav-tabs-link-active-bg:           $body-bg !default;
-$nav-tabs-link-active-border-color: $gray-300 $gray-300 $nav-tabs-link-active-bg !default;
-
-$nav-pills-border-radius:           $border-radius !default;
-$nav-pills-link-active-color:       $component-active-color !default;
-$nav-pills-link-active-bg:          $component-active-bg !default;
-
-$nav-divider-color:                 $gray-200 !default;
-$nav-divider-margin-y:              ($spacer / 2) !default;
-
-
-// Navbar
-
-$navbar-padding-y:                  ($spacer / 2) !default;
-$navbar-padding-x:                  $spacer !default;
-
-$navbar-nav-link-padding-x:         .5rem !default;
-
-$navbar-brand-font-size:            $font-size-lg !default;
-// Compute the navbar-brand padding-y so the navbar-brand will have the same height as navbar-text and nav-link
-$nav-link-height:                   ($font-size-base * $line-height-base + $nav-link-padding-y * 2) !default;
-$navbar-brand-height:               $navbar-brand-font-size * $line-height-base !default;
-$navbar-brand-padding-y:            ($nav-link-height - $navbar-brand-height) / 2 !default;
-
-$navbar-toggler-padding-y:          .25rem !default;
-$navbar-toggler-padding-x:          .75rem !default;
-$navbar-toggler-font-size:          $font-size-lg !default;
-$navbar-toggler-border-radius:      $btn-border-radius !default;
-
-$navbar-dark-color:                 rgba($white, .5) !default;
-$navbar-dark-hover-color:           rgba($white, .75) !default;
-$navbar-dark-active-color:          $white !default;
-$navbar-dark-disabled-color:        rgba($white, .25) !default;
-$navbar-dark-toggler-icon-bg:       str-replace(url("data:image/svg+xml,%3csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3e%3cpath stroke='#{$navbar-dark-color}' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e"), "#", "%23") !default;
-$navbar-dark-toggler-border-color:  rgba($white, .1) !default;
-
-$navbar-light-color:                rgba($black, .5) !default;
-$navbar-light-hover-color:          rgba($black, .7) !default;
-$navbar-light-active-color:         rgba($black, .9) !default;
-$navbar-light-disabled-color:       rgba($black, .3) !default;
-$navbar-light-toggler-icon-bg:      str-replace(url("data:image/svg+xml,%3csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3e%3cpath stroke='#{$navbar-light-color}' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e"), "#", "%23") !default;
-$navbar-light-toggler-border-color: rgba($black, .1) !default;
-
-$navbar-light-brand-color:                $navbar-light-active-color !default;
-$navbar-light-brand-hover-color:          $navbar-light-active-color !default;
-$navbar-dark-brand-color:                 $navbar-dark-active-color !default;
-$navbar-dark-brand-hover-color:           $navbar-dark-active-color !default;
-
-
-// Pagination
-
-$pagination-padding-y:              .5rem !default;
-$pagination-padding-x:              .75rem !default;
-$pagination-padding-y-sm:           .25rem !default;
-$pagination-padding-x-sm:           .5rem !default;
-$pagination-padding-y-lg:           .75rem !default;
-$pagination-padding-x-lg:           1.5rem !default;
-$pagination-line-height:            1.25 !default;
-
-$pagination-color:                  $link-color !default;
-$pagination-bg:                     $white !default;
-$pagination-border-width:           $border-width !default;
-$pagination-border-color:           $gray-300 !default;
-
-$pagination-focus-box-shadow:       $input-btn-focus-box-shadow !default;
-$pagination-focus-outline:          0 !default;
-
-$pagination-hover-color:            $link-hover-color !default;
-$pagination-hover-bg:               $gray-200 !default;
-$pagination-hover-border-color:     $gray-300 !default;
-
-$pagination-active-color:           $component-active-color !default;
-$pagination-active-bg:              $component-active-bg !default;
-$pagination-active-border-color:    $pagination-active-bg !default;
-
-$pagination-disabled-color:         $gray-600 !default;
-$pagination-disabled-bg:            $white !default;
-$pagination-disabled-border-color:  $gray-300 !default;
-
-
-// Jumbotron
-
-$jumbotron-padding:                 2rem !default;
-$jumbotron-bg:                      $gray-200 !default;
-
-
-// Cards
-
-$card-spacer-y:                     .75rem !default;
-$card-spacer-x:                     1.25rem !default;
-$card-border-width:                 $border-width !default;
-$card-border-radius:                $border-radius !default;
-$card-border-color:                 rgba($black, .125) !default;
-$card-inner-border-radius:          calc(#{$card-border-radius} - #{$card-border-width}) !default;
-$card-cap-bg:                       rgba($black, .03) !default;
-$card-cap-color:                    inherit !default;
-$card-bg:                           $white !default;
-
-$card-img-overlay-padding:          1.25rem !default;
-
-$card-group-margin:                 ($grid-gutter-width / 2) !default;
-$card-deck-margin:                  $card-group-margin !default;
-
-$card-columns-count:                3 !default;
-$card-columns-gap:                  1.25rem !default;
-$card-columns-margin:               $card-spacer-y !default;
-
-
-// Tooltips
-
-$tooltip-font-size:                 $font-size-sm !default;
-$tooltip-max-width:                 200px !default;
-$tooltip-color:                     $white !default;
-$tooltip-bg:                        $black !default;
-$tooltip-border-radius:             $border-radius !default;
-$tooltip-opacity:                   .9 !default;
-$tooltip-padding-y:                 .25rem !default;
-$tooltip-padding-x:                 .5rem !default;
-$tooltip-margin:                    0 !default;
-
-$tooltip-arrow-width:               .8rem !default;
-$tooltip-arrow-height:              .4rem !default;
-$tooltip-arrow-color:               $tooltip-bg !default;
-
-// Form tooltips must come after regular tooltips
-$form-feedback-tooltip-padding-y:     $tooltip-padding-y !default;
-$form-feedback-tooltip-padding-x:     $tooltip-padding-x !default;
-$form-feedback-tooltip-font-size:     $tooltip-font-size !default;
-$form-feedback-tooltip-line-height:   $line-height-base !default;
-$form-feedback-tooltip-opacity:       $tooltip-opacity !default;
-$form-feedback-tooltip-border-radius: $tooltip-border-radius !default;
-
-
-// Popovers
-
-$popover-font-size:                 $font-size-sm !default;
-$popover-bg:                        $white !default;
-$popover-max-width:                 276px !default;
-$popover-border-width:              $border-width !default;
-$popover-border-color:              rgba($black, .2) !default;
-$popover-border-radius:             $border-radius-lg !default;
-$popover-box-shadow:                0 .25rem .5rem rgba($black, .2) !default;
-
-$popover-header-bg:                 darken($popover-bg, 3%) !default;
-$popover-header-color:              $headings-color !default;
-$popover-header-padding-y:          .5rem !default;
-$popover-header-padding-x:          .75rem !default;
-
-$popover-body-color:                $body-color !default;
-$popover-body-padding-y:            $popover-header-padding-y !default;
-$popover-body-padding-x:            $popover-header-padding-x !default;
-
-$popover-arrow-width:               1rem !default;
-$popover-arrow-height:              .5rem !default;
-$popover-arrow-color:               $popover-bg !default;
-
-$popover-arrow-outer-color:         fade-in($popover-border-color, .05) !default;
-
-
-// Toasts
-$toast-max-width: 350px !default;
-$toast-padding-x: .75rem !default;
-$toast-padding-y: .25rem !default;
-$toast-font-size: .875rem !default;
-$toast-background-color: rgba($white, .85) !default;
-$toast-border-width: 1px !default;
-$toast-border-color: rgba(0, 0, 0, .1) !default;
-$toast-border-radius: .25rem !default;
-$toast-box-shadow: 0 .25rem .75rem rgba($black, .1) !default;
-
-$toast-header-color: $gray-600 !default;
-$toast-header-background-color: rgba($white, .85) !default;
-$toast-header-border-color: rgba(0, 0, 0, .05) !default;
-
-
-// Badges
-
-$badge-font-size:                   75% !default;
-$badge-font-weight:                 $font-weight-bold !default;
-$badge-padding-y:                   .25em !default;
-$badge-padding-x:                   .4em !default;
-$badge-border-radius:               $border-radius !default;
-
-$badge-pill-padding-x:              .6em !default;
-// Use a higher than normal value to ensure completely rounded edges when
-// customizing padding or font-size on labels.
-$badge-pill-border-radius:          10rem !default;
-
-
-// Modals
-
-// Padding applied to the modal body
-$modal-inner-padding:               1rem !default;
-
-$modal-dialog-margin:               .5rem !default;
-$modal-dialog-margin-y-sm-up:       1.75rem !default;
-
-$modal-title-line-height:           $line-height-base !default;
-
-$modal-content-bg:                  $white !default;
-$modal-content-border-color:        rgba($black, .2) !default;
-$modal-content-border-width:        $border-width !default;
-$modal-content-border-radius:       $border-radius-lg !default;
-$modal-content-box-shadow-xs:       0 .25rem .5rem rgba($black, .5) !default;
-$modal-content-box-shadow-sm-up:    0 .5rem 1rem rgba($black, .5) !default;
-
-$modal-backdrop-bg:                 $black !default;
-$modal-backdrop-opacity:            .5 !default;
-$modal-header-border-color:         $gray-200 !default;
-$modal-footer-border-color:         $modal-header-border-color !default;
-$modal-header-border-width:         $modal-content-border-width !default;
-$modal-footer-border-width:         $modal-header-border-width !default;
-$modal-header-padding-y:            1rem !default;
-$modal-header-padding-x:            1rem !default;
-$modal-header-padding:              $modal-header-padding-y $modal-header-padding-x !default; // Keep this for backwards compatibility
-
-$modal-xl:                          1140px !default;
-$modal-lg:                          800px !default;
-$modal-md:                          500px !default;
-$modal-sm:                          300px !default;
-
-$modal-fade-transform:              translate(0, -50px) !default;
-$modal-show-transform:              none !default;
-$modal-transition:                  transform .3s ease-out !default;
-
-
-// Alerts
-//
-// Define alert colors, border radius, and padding.
-
-$alert-padding-y:                   .75rem !default;
-$alert-padding-x:                   1.25rem !default;
-$alert-margin-bottom:               1rem !default;
-$alert-border-radius:               $border-radius !default;
-$alert-link-font-weight:            $font-weight-bold !default;
-$alert-border-width:                $border-width !default;
-
-$alert-bg-level:                    -10 !default;
-$alert-border-level:                -9 !default;
-$alert-color-level:                 6 !default;
-
-
-// Progress bars
-
-$progress-height:                   1rem !default;
-$progress-font-size:                ($font-size-base * .75) !default;
-$progress-bg:                       $gray-200 !default;
-$progress-border-radius:            $border-radius !default;
-$progress-box-shadow:               inset 0 .1rem .1rem rgba($black, .1) !default;
-$progress-bar-color:                $white !default;
-$progress-bar-bg:                   $primary !default;
-$progress-bar-animation-timing:     1s linear infinite !default;
-$progress-bar-transition:           width .6s ease !default;
-
-
-// List group
-
-$list-group-bg:                     $white !default;
-$list-group-border-color:           rgba($black, .125) !default;
-$list-group-border-width:           $border-width !default;
-$list-group-border-radius:          $border-radius !default;
-
-$list-group-item-padding-y:         .75rem !default;
-$list-group-item-padding-x:         1.25rem !default;
-
-$list-group-hover-bg:               $gray-100 !default;
-$list-group-active-color:           $component-active-color !default;
-$list-group-active-bg:              $component-active-bg !default;
-$list-group-active-border-color:    $list-group-active-bg !default;
-
-$list-group-disabled-color:         $gray-600 !default;
-$list-group-disabled-bg:            $list-group-bg !default;
-
-$list-group-action-color:           $gray-700 !default;
-$list-group-action-hover-color:     $list-group-action-color !default;
-
-$list-group-action-active-color:    $body-color !default;
-$list-group-action-active-bg:       $gray-200 !default;
-
-
-// Image thumbnails
-
-$thumbnail-padding:                 .25rem !default;
-$thumbnail-bg:                      $body-bg !default;
-$thumbnail-border-width:            $border-width !default;
-$thumbnail-border-color:            $gray-300 !default;
-$thumbnail-border-radius:           $border-radius !default;
-$thumbnail-box-shadow:              0 1px 2px rgba($black, .075) !default;
-
-
-// Figures
-
-$figure-caption-font-size:          90% !default;
-$figure-caption-color:              $gray-600 !default;
-
-
-// Breadcrumbs
-
-$breadcrumb-padding-y:              .75rem !default;
-$breadcrumb-padding-x:              1rem !default;
-$breadcrumb-item-padding:           .5rem !default;
-
-$breadcrumb-margin-bottom:          1rem !default;
-
-$breadcrumb-bg:                     $gray-200 !default;
-$breadcrumb-divider-color:          $gray-600 !default;
-$breadcrumb-active-color:           $gray-600 !default;
-$breadcrumb-divider:                quote("/") !default;
-
-$breadcrumb-border-radius:          $border-radius !default;
-
-
-// Carousel
-
-$carousel-control-color:             $white !default;
-$carousel-control-width:             15% !default;
-$carousel-control-opacity:           .5 !default;
-$carousel-control-hover-opacity:     .9 !default;
-$carousel-control-transition:        opacity .15s ease !default;
-
-$carousel-indicator-width:           30px !default;
-$carousel-indicator-height:          3px !default;
-$carousel-indicator-hit-area-height: 10px !default;
-$carousel-indicator-spacer:          3px !default;
-$carousel-indicator-active-bg:       $white !default;
-$carousel-indicator-transition:      opacity .6s ease !default;
-
-$carousel-caption-width:             70% !default;
-$carousel-caption-color:             $white !default;
-
-$carousel-control-icon-width:        20px !default;
-
-$carousel-control-prev-icon-bg:      str-replace(url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='#{$carousel-control-color}' viewBox='0 0 8 8'%3e%3cpath d='M5.25 0l-4 4 4 4 1.5-1.5-2.5-2.5 2.5-2.5-1.5-1.5z'/%3e%3c/svg%3e"), "#", "%23") !default;
-$carousel-control-next-icon-bg:      str-replace(url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='#{$carousel-control-color}' viewBox='0 0 8 8'%3e%3cpath d='M2.75 0l-1.5 1.5 2.5 2.5-2.5 2.5 1.5 1.5 4-4-4-4z'/%3e%3c/svg%3e"), "#", "%23") !default;
-
-$carousel-transition-duration:       .6s !default;
-$carousel-transition:                transform $carousel-transition-duration ease-in-out !default; // Define transform transition first if using multiple transitions (e.g., `transform 2s ease, opacity .5s ease-out`)
-
-
-// Spinners
-
-$spinner-width:         2rem !default;
-$spinner-height:        $spinner-width !default;
-$spinner-border-width:  .25em !default;
-
-$spinner-width-sm:        1rem !default;
-$spinner-height-sm:       $spinner-width-sm !default;
-$spinner-border-width-sm: .2em !default;
-
-
-// Close
-
-$close-font-size:                   $font-size-base * 1.5 !default;
-$close-font-weight:                 $font-weight-bold !default;
-$close-color:                       $black !default;
-$close-text-shadow:                 0 1px 0 $white !default;
-
-
-// Code
-
-$code-font-size:                    87.5% !default;
-$code-color:                        $pink !default;
-
-$kbd-padding-y:                     .2rem !default;
-$kbd-padding-x:                     .4rem !default;
-$kbd-font-size:                     $code-font-size !default;
-$kbd-color:                         $white !default;
-$kbd-bg:                            $gray-900 !default;
-
-$pre-color:                         $gray-900 !default;
-$pre-scrollable-max-height:         340px !default;
-
-
-// Utilities
-
-$overflows: auto, hidden !default;
-$positions: static, relative, absolute, fixed, sticky !default;
-
-
-// Printing
-
-$print-page-size:                   a3 !default;
-$print-body-min-width:              map-get($grid-breakpoints, "lg") !default;
diff --git a/scss/bootstrap/bootstrap-grid.scss b/scss/bootstrap/bootstrap-grid.scss
deleted file mode 100644
index 16f5f0dfb9..0000000000
--- a/scss/bootstrap/bootstrap-grid.scss
+++ /dev/null
@@ -1,33 +0,0 @@
-/*!
- * Bootstrap Grid v4.1.3 (https://getbootstrap.com/)
- * Copyright 2011-2018 The Bootstrap Authors
- * Copyright 2011-2018 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- */
-
-@at-root {
-  @-ms-viewport { width: device-width; } // stylelint-disable-line at-rule-no-vendor-prefix
-}
-
-html {
-  box-sizing: border-box;
-  -ms-overflow-style: scrollbar;
-}
-
-*,
-*::before,
-*::after {
-  box-sizing: inherit;
-}
-
-@import "functions";
-@import "variables";
-
-@import "mixins/breakpoints";
-@import "mixins/grid-framework";
-@import "mixins/grid";
-
-@import "grid";
-@import "utilities/display";
-@import "utilities/flex";
-@import "utilities/spacing";
diff --git a/scss/bootstrap/bootstrap-reboot.scss b/scss/bootstrap/bootstrap-reboot.scss
deleted file mode 100644
index 75baeb713e..0000000000
--- a/scss/bootstrap/bootstrap-reboot.scss
+++ /dev/null
@@ -1,12 +0,0 @@
-/*!
- * Bootstrap Reboot v4.1.3 (https://getbootstrap.com/)
- * Copyright 2011-2018 The Bootstrap Authors
- * Copyright 2011-2018 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
- */
-
-@import "functions";
-@import "variables";
-@import "mixins";
-@import "reboot";
diff --git a/scss/bootstrap/bootstrap.scss b/scss/bootstrap/bootstrap.scss
deleted file mode 100644
index ab480ba8cc..0000000000
--- a/scss/bootstrap/bootstrap.scss
+++ /dev/null
@@ -1,47 +0,0 @@
-/*!
- * Bootstrap v4.1.3 (https://getbootstrap.com/)
- * Copyright 2011-2018 The Bootstrap Authors
- * Copyright 2011-2018 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- */
-
-/*
-Caller should import variables (which in turn includes functions..)
-@import "functions";
-@import "variables";
-*/
-@import "mixins";
-@import "root";
-@import "reboot";
-@import "type";
-@import "images";
-@import "code";
-@import "grid";
-@import "tables";
-@import "forms";
-@import "buttons";
-@import "transitions";
-@import "dropdown";
-@import "button-group";
-@import "input-group";
-@import "custom-forms";
-@import "nav";
-@import "navbar";
-@import "card";
-@import "breadcrumb";
-@import "pagination";
-@import "badge";
-@import "jumbotron";
-@import "alert";
-@import "progress";
-@import "media";
-@import "list-group";
-@import "close";
-@import "toasts";
-@import "modal";
-@import "tooltip";
-@import "popover";
-@import "carousel";
-@import "spinners";
-@import "utilities";
-@import "print";
diff --git a/scss/bootstrap/mixins/_alert.scss b/scss/bootstrap/mixins/_alert.scss
deleted file mode 100644
index db5a7eb454..0000000000
--- a/scss/bootstrap/mixins/_alert.scss
+++ /dev/null
@@ -1,13 +0,0 @@
-@mixin alert-variant($background, $border, $color) {
-  color: $color;
-  @include gradient-bg($background);
-  border-color: $border;
-
-  hr {
-    border-top-color: darken($border, 5%);
-  }
-
-  .alert-link {
-    color: darken($color, 10%);
-  }
-}
diff --git a/scss/bootstrap/mixins/_background-variant.scss b/scss/bootstrap/mixins/_background-variant.scss
deleted file mode 100644
index 494439d2b4..0000000000
--- a/scss/bootstrap/mixins/_background-variant.scss
+++ /dev/null
@@ -1,21 +0,0 @@
-// stylelint-disable declaration-no-important
-
-// Contextual backgrounds
-
-@mixin bg-variant($parent, $color) {
-  #{$parent} {
-    background-color: $color !important;
-  }
-  a#{$parent},
-  button#{$parent} {
-    @include hover-focus {
-      background-color: darken($color, 10%) !important;
-    }
-  }
-}
-
-@mixin bg-gradient-variant($parent, $color) {
-  #{$parent} {
-    background: $color linear-gradient(180deg, mix($body-bg, $color, 15%), $color) repeat-x !important;
-  }
-}
diff --git a/scss/bootstrap/mixins/_badge.scss b/scss/bootstrap/mixins/_badge.scss
deleted file mode 100644
index 3075dddaa9..0000000000
--- a/scss/bootstrap/mixins/_badge.scss
+++ /dev/null
@@ -1,12 +0,0 @@
-@mixin badge-variant($bg) {
-  color: color-yiq($bg);
-  background-color: $bg;
-
-  &[href] {
-    @include hover-focus {
-      color: color-yiq($bg);
-      text-decoration: none;
-      background-color: darken($bg, 10%);
-    }
-  }
-}
\ No newline at end of file
diff --git a/scss/bootstrap/mixins/_border-radius.scss b/scss/bootstrap/mixins/_border-radius.scss
deleted file mode 100644
index 2024febcfa..0000000000
--- a/scss/bootstrap/mixins/_border-radius.scss
+++ /dev/null
@@ -1,35 +0,0 @@
-// Single side border-radius
-
-@mixin border-radius($radius: $border-radius) {
-  @if $enable-rounded {
-    border-radius: $radius;
-  }
-}
-
-@mixin border-top-radius($radius) {
-  @if $enable-rounded {
-    border-top-left-radius: $radius;
-    border-top-right-radius: $radius;
-  }
-}
-
-@mixin border-right-radius($radius) {
-  @if $enable-rounded {
-    border-top-right-radius: $radius;
-    border-bottom-right-radius: $radius;
-  }
-}
-
-@mixin border-bottom-radius($radius) {
-  @if $enable-rounded {
-    border-bottom-right-radius: $radius;
-    border-bottom-left-radius: $radius;
-  }
-}
-
-@mixin border-left-radius($radius) {
-  @if $enable-rounded {
-    border-top-left-radius: $radius;
-    border-bottom-left-radius: $radius;
-  }
-}
diff --git a/scss/bootstrap/mixins/_box-shadow.scss b/scss/bootstrap/mixins/_box-shadow.scss
deleted file mode 100644
index b2410e53ac..0000000000
--- a/scss/bootstrap/mixins/_box-shadow.scss
+++ /dev/null
@@ -1,5 +0,0 @@
-@mixin box-shadow($shadow...) {
-  @if $enable-shadows {
-    box-shadow: $shadow;
-  }
-}
diff --git a/scss/bootstrap/mixins/_breakpoints.scss b/scss/bootstrap/mixins/_breakpoints.scss
deleted file mode 100644
index 23a5de96be..0000000000
--- a/scss/bootstrap/mixins/_breakpoints.scss
+++ /dev/null
@@ -1,123 +0,0 @@
-// Breakpoint viewport sizes and media queries.
-//
-// Breakpoints are defined as a map of (name: minimum width), order from small to large:
-//
-//    (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px)
-//
-// The map defined in the `$grid-breakpoints` global variable is used as the `$breakpoints` argument by default.
-
-// Name of the next breakpoint, or null for the last breakpoint.
-//
-//    >> breakpoint-next(sm)
-//    md
-//    >> breakpoint-next(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
-//    md
-//    >> breakpoint-next(sm, $breakpoint-names: (xs sm md lg xl))
-//    md
-@function breakpoint-next($name, $breakpoints: $grid-breakpoints, $breakpoint-names: map-keys($breakpoints)) {
-  $n: index($breakpoint-names, $name);
-  @return if($n != null and $n < length($breakpoint-names), nth($breakpoint-names, $n + 1), null);
-}
-
-// Minimum breakpoint width. Null for the smallest (first) breakpoint.
-//
-//    >> breakpoint-min(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
-//    576px
-@function breakpoint-min($name, $breakpoints: $grid-breakpoints) {
-  $min: map-get($breakpoints, $name);
-  @return if($min != 0, $min, null);
-}
-
-// Maximum breakpoint width. Null for the largest (last) breakpoint.
-// The maximum value is calculated as the minimum of the next one less 0.02px
-// to work around the limitations of `min-` and `max-` prefixes and viewports with fractional widths.
-// See https://www.w3.org/TR/mediaqueries-4/#mq-min-max
-// Uses 0.02px rather than 0.01px to work around a current rounding bug in Safari.
-// See https://bugs.webkit.org/show_bug.cgi?id=178261
-//
-//    >> breakpoint-max(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
-//    767.98px
-@function breakpoint-max($name, $breakpoints: $grid-breakpoints) {
-  $next: breakpoint-next($name, $breakpoints);
-  @return if($next, breakpoint-min($next, $breakpoints) - .02, null);
-}
-
-// Returns a blank string if smallest breakpoint, otherwise returns the name with a dash in front.
-// Useful for making responsive utilities.
-//
-//    >> breakpoint-infix(xs, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
-//    ""  (Returns a blank string)
-//    >> breakpoint-infix(sm, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))
-//    "-sm"
-@function breakpoint-infix($name, $breakpoints: $grid-breakpoints) {
-  @return if(breakpoint-min($name, $breakpoints) == null, "", "-#{$name}");
-}
-
-// Media of at least the minimum breakpoint width. No query for the smallest breakpoint.
-// Makes the @content apply to the given breakpoint and wider.
-@mixin media-breakpoint-up($name, $breakpoints: $grid-breakpoints) {
-  $min: breakpoint-min($name, $breakpoints);
-  @if $min {
-    @media (min-width: $min) {
-      @content;
-    }
-  } @else {
-    @content;
-  }
-}
-
-// Media of at most the maximum breakpoint width. No query for the largest breakpoint.
-// Makes the @content apply to the given breakpoint and narrower.
-@mixin media-breakpoint-down($name, $breakpoints: $grid-breakpoints) {
-  $max: breakpoint-max($name, $breakpoints);
-  @if $max {
-    @media (max-width: $max) {
-      @content;
-    }
-  } @else {
-    @content;
-  }
-}
-
-// Media that spans multiple breakpoint widths.
-// Makes the @content apply between the min and max breakpoints
-@mixin media-breakpoint-between($lower, $upper, $breakpoints: $grid-breakpoints) {
-  $min: breakpoint-min($lower, $breakpoints);
-  $max: breakpoint-max($upper, $breakpoints);
-
-  @if $min != null and $max != null {
-    @media (min-width: $min) and (max-width: $max) {
-      @content;
-    }
-  } @else if $max == null {
-    @include media-breakpoint-up($lower, $breakpoints) {
-      @content;
-    }
-  } @else if $min == null {
-    @include media-breakpoint-down($upper, $breakpoints) {
-      @content;
-    }
-  }
-}
-
-// Media between the breakpoint's minimum and maximum widths.
-// No minimum for the smallest breakpoint, and no maximum for the largest one.
-// Makes the @content apply only to the given breakpoint, not viewports any wider or narrower.
-@mixin media-breakpoint-only($name, $breakpoints: $grid-breakpoints) {
-  $min: breakpoint-min($name, $breakpoints);
-  $max: breakpoint-max($name, $breakpoints);
-
-  @if $min != null and $max != null {
-    @media (min-width: $min) and (max-width: $max) {
-      @content;
-    }
-  } @else if $max == null {
-    @include media-breakpoint-up($name, $breakpoints) {
-      @content;
-    }
-  } @else if $min == null {
-    @include media-breakpoint-down($name, $breakpoints) {
-      @content;
-    }
-  }
-}
diff --git a/scss/bootstrap/mixins/_buttons.scss b/scss/bootstrap/mixins/_buttons.scss
deleted file mode 100644
index 3e1e2c09d0..0000000000
--- a/scss/bootstrap/mixins/_buttons.scss
+++ /dev/null
@@ -1,111 +0,0 @@
-// Button variants
-//
-// Easily pump out default styles, as well as :hover, :focus, :active,
-// and disabled options for all buttons
-
-@mixin button-variant($background, $border, $hover-background: darken($background, 7.5%), $hover-border: darken($border, 10%), $active-background: darken($background, 10%), $active-border: darken($border, 12.5%)) {
-  color: color-yiq($background);
-  @include gradient-bg($background);
-  border-color: $border;
-  @include box-shadow($btn-box-shadow);
-
-  @include hover {
-    color: color-yiq($hover-background);
-    @include gradient-bg($hover-background);
-    border-color: $hover-border;
-  }
-
-  &:focus,
-  &.focus {
-    // Avoid using mixin so we can pass custom focus shadow properly
-    @if $enable-shadows {
-      box-shadow: $btn-box-shadow, 0 0 0 $btn-focus-width rgba(mix(color-yiq($background), $border, 15%), .5);
-    } @else {
-      box-shadow: 0 0 0 $btn-focus-width rgba(mix(color-yiq($background), $border, 15%), .5);
-    }
-  }
-
-  // Disabled comes first so active can properly restyle
-  &.disabled,
-  &:disabled {
-    color: color-yiq($background);
-    background-color: $background;
-    border-color: $border;
-    // Remove CSS gradients if they're enabled
-    @if $enable-gradients {
-      background-image: none;
-    }
-  }
-
-  &:not(:disabled):not(.disabled):active,
-  &:not(:disabled):not(.disabled).active,
-  .show > &.dropdown-toggle {
-    color: color-yiq($active-background);
-    background-color: $active-background;
-    @if $enable-gradients {
-      background-image: none; // Remove the gradient for the pressed/active state
-    }
-    border-color: $active-border;
-
-    &:focus {
-      // Avoid using mixin so we can pass custom focus shadow properly
-      @if $enable-shadows {
-        box-shadow: $btn-active-box-shadow, 0 0 0 $btn-focus-width rgba(mix(color-yiq($background), $border, 15%), .5);
-      } @else {
-        box-shadow: 0 0 0 $btn-focus-width rgba(mix(color-yiq($background), $border, 15%), .5);
-      }
-    }
-  }
-}
-
-@mixin button-outline-variant($color, $color-hover: color-yiq($color), $active-background: $color, $active-border: $color) {
-  color: $color;
-  border-color: $color;
-
-  @include hover {
-    color: $color-hover;
-    background-color: $active-background;
-    border-color: $active-border;
-  }
-
-  &:focus,
-  &.focus {
-    box-shadow: 0 0 0 $btn-focus-width rgba($color, .5);
-  }
-
-  &.disabled,
-  &:disabled {
-    color: $color;
-    background-color: transparent;
-  }
-
-  &:not(:disabled):not(.disabled):active,
-  &:not(:disabled):not(.disabled).active,
-  .show > &.dropdown-toggle {
-    color: color-yiq($active-background);
-    background-color: $active-background;
-    border-color: $active-border;
-
-    &:focus {
-      // Avoid using mixin so we can pass custom focus shadow properly
-      @if $enable-shadows and $btn-active-box-shadow != none {
-        box-shadow: $btn-active-box-shadow, 0 0 0 $btn-focus-width rgba($color, .5);
-      } @else {
-        box-shadow: 0 0 0 $btn-focus-width rgba($color, .5);
-      }
-    }
-  }
-}
-
-// Button sizes
-@mixin button-size($padding-y, $padding-x, $font-size, $line-height, $border-radius) {
-  padding: $padding-y $padding-x;
-  font-size: $font-size;
-  line-height: $line-height;
-  // Manually declare to provide an override to the browser default
-  @if $enable-rounded {
-    border-radius: $border-radius;
-  } @else {
-    border-radius: 0;
-  }
-}
diff --git a/scss/bootstrap/mixins/_caret.scss b/scss/bootstrap/mixins/_caret.scss
deleted file mode 100644
index 982522c54b..0000000000
--- a/scss/bootstrap/mixins/_caret.scss
+++ /dev/null
@@ -1,62 +0,0 @@
-@mixin caret-down {
-  border-top: $caret-width solid;
-  border-right: $caret-width solid transparent;
-  border-bottom: 0;
-  border-left: $caret-width solid transparent;
-}
-
-@mixin caret-up {
-  border-top: 0;
-  border-right: $caret-width solid transparent;
-  border-bottom: $caret-width solid;
-  border-left: $caret-width solid transparent;
-}
-
-@mixin caret-right {
-  border-top: $caret-width solid transparent;
-  border-right: 0;
-  border-bottom: $caret-width solid transparent;
-  border-left: $caret-width solid;
-}
-
-@mixin caret-left {
-  border-top: $caret-width solid transparent;
-  border-right: $caret-width solid;
-  border-bottom: $caret-width solid transparent;
-}
-
-@mixin caret($direction: down) {
-  @if $enable-caret {
-    &::after {
-      display: inline-block;
-      margin-left: $caret-width * .85;
-      vertical-align: $caret-width * .85;
-      content: "";
-      @if $direction == down {
-        @include caret-down;
-      } @else if $direction == up {
-        @include caret-up;
-      } @else if $direction == right {
-        @include caret-right;
-      }
-    }
-
-    @if $direction == left {
-      &::after {
-        display: none;
-      }
-
-      &::before {
-        display: inline-block;
-        margin-right: $caret-width * .85;
-        vertical-align: $caret-width * .85;
-        content: "";
-        @include caret-left;
-      }
-    }
-
-    &:empty::after {
-      margin-left: 0;
-    }
-  }
-}
diff --git a/scss/bootstrap/mixins/_clearfix.scss b/scss/bootstrap/mixins/_clearfix.scss
deleted file mode 100644
index 11a977b737..0000000000
--- a/scss/bootstrap/mixins/_clearfix.scss
+++ /dev/null
@@ -1,7 +0,0 @@
-@mixin clearfix() {
-  &::after {
-    display: block;
-    clear: both;
-    content: "";
-  }
-}
diff --git a/scss/bootstrap/mixins/_float.scss b/scss/bootstrap/mixins/_float.scss
deleted file mode 100644
index 48fa8b6d59..0000000000
--- a/scss/bootstrap/mixins/_float.scss
+++ /dev/null
@@ -1,11 +0,0 @@
-// stylelint-disable declaration-no-important
-
-@mixin float-left {
-  float: left !important;
-}
-@mixin float-right {
-  float: right !important;
-}
-@mixin float-none {
-  float: none !important;
-}
diff --git a/scss/bootstrap/mixins/_forms.scss b/scss/bootstrap/mixins/_forms.scss
deleted file mode 100644
index b8eb59d836..0000000000
--- a/scss/bootstrap/mixins/_forms.scss
+++ /dev/null
@@ -1,198 +0,0 @@
-// Form control focus state
-//
-// Generate a customized focus state and for any input with the specified color,
-// which defaults to the `$input-focus-border-color` variable.
-//
-// We highly encourage you to not customize the default value, but instead use
-// this to tweak colors on an as-needed basis. This aesthetic change is based on
-// WebKit's default styles, but applicable to a wider range of browsers. Its
-// usability and accessibility should be taken into account with any change.
-//
-// Example usage: change the default blue border and shadow to white for better
-// contrast against a dark gray background.
-@mixin form-control-focus() {
-  &:focus {
-    color: $input-focus-color;
-    background-color: $input-focus-bg;
-    border-color: $input-focus-border-color;
-    outline: 0;
-    // Avoid using mixin so we can pass custom focus shadow properly
-    @if $enable-shadows {
-      box-shadow: $input-box-shadow, $input-focus-box-shadow;
-    } @else {
-      box-shadow: $input-focus-box-shadow;
-    }
-  }
-}
-
-
-@mixin form-validation-state($state, $color) {
-  .#{$state}-feedback {
-    display: none;
-    width: 100%;
-    margin-top: $form-feedback-margin-top;
-    font-size: $form-feedback-font-size;
-    color: $color;
-  }
-
-  .#{$state}-tooltip {
-    position: absolute;
-    top: 100%;
-    z-index: 5;
-    display: none;
-    max-width: 100%; // Contain to parent when possible
-    padding: $form-feedback-tooltip-padding-y $form-feedback-tooltip-padding-x;
-    margin-top: .1rem;
-    font-size: $form-feedback-tooltip-font-size;
-    line-height: $form-feedback-tooltip-line-height;
-    color: color-yiq($color);
-    background-color: rgba($color, $form-feedback-tooltip-opacity);
-    @include border-radius($form-feedback-tooltip-border-radius);
-  }
-
-  .form-control {
-    .was-validated &:#{$state},
-    &.is-#{$state} {
-      border-color: $color;
-
-      @if $enable-validation-icons {
-        padding-right: $input-height-inner;
-        background-repeat: no-repeat;
-        background-position: center right calc(#{$input-height-inner} / 4);
-        background-size: calc(#{$input-height-inner} / 2) calc(#{$input-height-inner} / 2);
-
-        @if $state == "valid" {
-          background-image: $form-feedback-icon-valid;
-        } @else {
-          background-image: $form-feedback-icon-invalid;
-        }
-      }
-
-      &:focus {
-        border-color: $color;
-        box-shadow: 0 0 0 $input-focus-width rgba($color, .25);
-      }
-
-      ~ .#{$state}-feedback,
-      ~ .#{$state}-tooltip {
-        display: block;
-      }
-    }
-  }
-
-  // stylelint-disable-next-line selector-no-qualifying-type
-  textarea.form-control {
-    .was-validated &:#{$state},
-    &.is-#{$state} {
-      @if $enable-validation-icons {
-        padding-right: $input-height-inner;
-        background-position: top calc(#{$input-height-inner} / 4) right calc(#{$input-height-inner} / 4);
-      }
-    }
-  }
-
-  .custom-select {
-    .was-validated &:#{$state},
-    &.is-#{$state} {
-      border-color: $color;
-
-      @if $enable-validation-icons {
-        $form-feedback-icon: if($state == "valid", $form-feedback-icon-valid, $form-feedback-icon-invalid);
-        padding-right: $custom-select-feedback-icon-padding-right;
-        background: $custom-select-background, $form-feedback-icon no-repeat $custom-select-feedback-icon-position / $custom-select-feedback-icon-size;
-      }
-
-      &:focus {
-        border-color: $color;
-        box-shadow: 0 0 0 $input-focus-width rgba($color, .25);
-      }
-
-      ~ .#{$state}-feedback,
-      ~ .#{$state}-tooltip {
-        display: block;
-      }
-    }
-  }
-
-
-  .form-control-file {
-    .was-validated &:#{$state},
-    &.is-#{$state} {
-      ~ .#{$state}-feedback,
-      ~ .#{$state}-tooltip {
-        display: block;
-      }
-    }
-  }
-
-  .form-check-input {
-    .was-validated &:#{$state},
-    &.is-#{$state} {
-      ~ .form-check-label {
-        color: $color;
-      }
-
-      ~ .#{$state}-feedback,
-      ~ .#{$state}-tooltip {
-        display: block;
-      }
-    }
-  }
-
-  .custom-control-input {
-    .was-validated &:#{$state},
-    &.is-#{$state} {
-      ~ .custom-control-label {
-        color: $color;
-
-        &::before {
-          border-color: $color;
-        }
-      }
-
-      ~ .#{$state}-feedback,
-      ~ .#{$state}-tooltip {
-        display: block;
-      }
-
-      &:checked {
-        ~ .custom-control-label::before {
-          border-color: lighten($color, 10%);
-          @include gradient-bg(lighten($color, 10%));
-        }
-      }
-
-      &:focus {
-        ~ .custom-control-label::before {
-          box-shadow: 0 0 0 $input-focus-width rgba($color, .25);
-        }
-
-        &:not(:checked) ~ .custom-control-label::before {
-          border-color: $color;
-        }
-      }
-    }
-  }
-
-  // custom file
-  .custom-file-input {
-    .was-validated &:#{$state},
-    &.is-#{$state} {
-      ~ .custom-file-label {
-        border-color: $color;
-      }
-
-      ~ .#{$state}-feedback,
-      ~ .#{$state}-tooltip {
-        display: block;
-      }
-
-      &:focus {
-        ~ .custom-file-label {
-          border-color: $color;
-          box-shadow: 0 0 0 $input-focus-width rgba($color, .25);
-        }
-      }
-    }
-  }
-}
diff --git a/scss/bootstrap/mixins/_gradients.scss b/scss/bootstrap/mixins/_gradients.scss
deleted file mode 100644
index 88c4d64b7f..0000000000
--- a/scss/bootstrap/mixins/_gradients.scss
+++ /dev/null
@@ -1,45 +0,0 @@
-// Gradients
-
-@mixin gradient-bg($color) {
-  @if $enable-gradients {
-    background: $color linear-gradient(180deg, mix($body-bg, $color, 15%), $color) repeat-x;
-  } @else {
-    background-color: $color;
-  }
-}
-
-// Horizontal gradient, from left to right
-//
-// Creates two color stops, start and end, by specifying a color and position for each color stop.
-@mixin gradient-x($start-color: $gray-700, $end-color: $gray-800, $start-percent: 0%, $end-percent: 100%) {
-  background-image: linear-gradient(to right, $start-color $start-percent, $end-color $end-percent);
-  background-repeat: repeat-x;
-}
-
-// Vertical gradient, from top to bottom
-//
-// Creates two color stops, start and end, by specifying a color and position for each color stop.
-@mixin gradient-y($start-color: $gray-700, $end-color: $gray-800, $start-percent: 0%, $end-percent: 100%) {
-  background-image: linear-gradient(to bottom, $start-color $start-percent, $end-color $end-percent);
-  background-repeat: repeat-x;
-}
-
-@mixin gradient-directional($start-color: $gray-700, $end-color: $gray-800, $deg: 45deg) {
-  background-image: linear-gradient($deg, $start-color, $end-color);
-  background-repeat: repeat-x;
-}
-@mixin gradient-x-three-colors($start-color: $blue, $mid-color: $purple, $color-stop: 50%, $end-color: $red) {
-  background-image: linear-gradient(to right, $start-color, $mid-color $color-stop, $end-color);
-  background-repeat: no-repeat;
-}
-@mixin gradient-y-three-colors($start-color: $blue, $mid-color: $purple, $color-stop: 50%, $end-color: $red) {
-  background-image: linear-gradient($start-color, $mid-color $color-stop, $end-color);
-  background-repeat: no-repeat;
-}
-@mixin gradient-radial($inner-color: $gray-700, $outer-color: $gray-800) {
-  background-image: radial-gradient(circle, $inner-color, $outer-color);
-  background-repeat: no-repeat;
-}
-@mixin gradient-striped($color: rgba($white, .15), $angle: 45deg) {
-  background-image: linear-gradient($angle, $color 25%, transparent 25%, transparent 50%, $color 50%, $color 75%, transparent 75%, transparent);
-}
diff --git a/scss/bootstrap/mixins/_grid-framework.scss b/scss/bootstrap/mixins/_grid-framework.scss
deleted file mode 100644
index ff7e1496a6..0000000000
--- a/scss/bootstrap/mixins/_grid-framework.scss
+++ /dev/null
@@ -1,66 +0,0 @@
-// Framework grid generation
-//
-// Used only by Bootstrap to generate the correct number of grid classes given
-// any value of `$grid-columns`.
-
-@mixin make-grid-columns($columns: $grid-columns, $gutter: $grid-gutter-width, $breakpoints: $grid-breakpoints) {
-  // Common properties for all breakpoints
-  %grid-column {
-    position: relative;
-    width: 100%;
-    padding-right: ($gutter / 2);
-    padding-left: ($gutter / 2);
-  }
-
-  @each $breakpoint in map-keys($breakpoints) {
-    $infix: breakpoint-infix($breakpoint, $breakpoints);
-
-    // Allow columns to stretch full width below their breakpoints
-    @for $i from 1 through $columns {
-      .col#{$infix}-#{$i} {
-        @extend %grid-column;
-      }
-    }
-    .col#{$infix},
-    .col#{$infix}-auto {
-      @extend %grid-column;
-    }
-
-    @include media-breakpoint-up($breakpoint, $breakpoints) {
-      // Provide basic `.col-{bp}` classes for equal-width flexbox columns
-      .col#{$infix} {
-        flex-basis: 0;
-        flex-grow: 1;
-        max-width: 100%;
-      }
-      .col#{$infix}-auto {
-        flex: 0 0 auto;
-        width: auto;
-        max-width: 100%; // Reset earlier grid tiers
-      }
-
-      @for $i from 1 through $columns {
-        .col#{$infix}-#{$i} {
-          @include make-col($i, $columns);
-        }
-      }
-
-      .order#{$infix}-first { order: -1; }
-
-      .order#{$infix}-last { order: $columns + 1; }
-
-      @for $i from 0 through $columns {
-        .order#{$infix}-#{$i} { order: $i; }
-      }
-
-      // `$columns - 1` because offsetting by the width of an entire row isn't possible
-      @for $i from 0 through ($columns - 1) {
-        @if not ($infix == "" and $i == 0) { // Avoid emitting useless .offset-0
-          .offset#{$infix}-#{$i} {
-            @include make-col-offset($i, $columns);
-          }
-        }
-      }
-    }
-  }
-}
diff --git a/scss/bootstrap/mixins/_grid.scss b/scss/bootstrap/mixins/_grid.scss
deleted file mode 100644
index 254f0734c9..0000000000
--- a/scss/bootstrap/mixins/_grid.scss
+++ /dev/null
@@ -1,51 +0,0 @@
-/// Grid system
-//
-// Generate semantic grid columns with these mixins.
-
-@mixin make-container() {
-  width: 100%;
-  padding-right: ($grid-gutter-width / 2);
-  padding-left: ($grid-gutter-width / 2);
-  margin-right: auto;
-  margin-left: auto;
-}
-
-
-// For each breakpoint, define the maximum width of the container in a media query
-@mixin make-container-max-widths($max-widths: $container-max-widths, $breakpoints: $grid-breakpoints) {
-  @each $breakpoint, $container-max-width in $max-widths {
-    @include media-breakpoint-up($breakpoint, $breakpoints) {
-      max-width: $container-max-width;
-    }
-  }
-}
-
-@mixin make-row() {
-  display: flex;
-  flex-wrap: wrap;
-  margin-right: ($grid-gutter-width / -2);
-  margin-left: ($grid-gutter-width / -2);
-}
-
-@mixin make-col-ready() {
-  position: relative;
-  // Prevent columns from becoming too narrow when at smaller grid tiers by
-  // always setting `width: 100%;`. This works because we use `flex` values
-  // later on to override this initial width.
-  width: 100%;
-  padding-right: ($grid-gutter-width / 2);
-  padding-left: ($grid-gutter-width / 2);
-}
-
-@mixin make-col($size, $columns: $grid-columns) {
-  flex: 0 0 percentage($size / $columns);
-  // Add a `max-width` to ensure content within each column does not blow out
-  // the width of the column. Applies to IE10+ and Firefox. Chrome and Safari
-  // do not appear to require this.
-  max-width: percentage($size / $columns);
-}
-
-@mixin make-col-offset($size, $columns: $grid-columns) {
-  $num: $size / $columns;
-  margin-left: if($num == 0, 0, percentage($num));
-}
diff --git a/scss/bootstrap/mixins/_hover.scss b/scss/bootstrap/mixins/_hover.scss
deleted file mode 100644
index 192f847e17..0000000000
--- a/scss/bootstrap/mixins/_hover.scss
+++ /dev/null
@@ -1,37 +0,0 @@
-// Hover mixin and `$enable-hover-media-query` are deprecated.
-//
-// Originally added during our alphas and maintained during betas, this mixin was
-// designed to prevent `:hover` stickiness on iOS-an issue where hover styles
-// would persist after initial touch.
-//
-// For backward compatibility, we've kept these mixins and updated them to
-// always return their regular pseudo-classes instead of a shimmed media query.
-//
-// Issue: https://github.com/twbs/bootstrap/issues/25195
-
-@mixin hover {
-  &:hover { @content; }
-}
-
-@mixin hover-focus {
-  &:hover,
-  &:focus {
-    @content;
-  }
-}
-
-@mixin plain-hover-focus {
-  &,
-  &:hover,
-  &:focus {
-    @content;
-  }
-}
-
-@mixin hover-focus-active {
-  &:hover,
-  &:focus,
-  &:active {
-    @content;
-  }
-}
diff --git a/scss/bootstrap/mixins/_image.scss b/scss/bootstrap/mixins/_image.scss
deleted file mode 100644
index 0544f0d2a3..0000000000
--- a/scss/bootstrap/mixins/_image.scss
+++ /dev/null
@@ -1,36 +0,0 @@
-// Image Mixins
-// - Responsive image
-// - Retina image
-
-
-// Responsive image
-//
-// Keep images from scaling beyond the width of their parents.
-
-@mixin img-fluid {
-  // Part 1: Set a maximum relative to the parent
-  max-width: 100%;
-  // Part 2: Override the height to auto, otherwise images will be stretched
-  // when setting a width and height attribute on the img element.
-  height: auto;
-}
-
-
-// Retina image
-//
-// Short retina mixin for setting background-image and -size.
-
-// stylelint-disable indentation, media-query-list-comma-newline-after
-@mixin img-retina($file-1x, $file-2x, $width-1x, $height-1x) {
-  background-image: url($file-1x);
-
-  // Autoprefixer takes care of adding -webkit-min-device-pixel-ratio and -o-min-device-pixel-ratio,
-  // but doesn't convert dppx=>dpi.
-  // There's no such thing as unprefixed min-device-pixel-ratio since it's nonstandard.
-  // Compatibility info: https://caniuse.com/#feat=css-media-resolution
-  @media only screen and (min-resolution: 192dpi), // IE9-11 don't support dppx
-  only screen and (min-resolution: 2dppx) { // Standardized
-    background-image: url($file-2x);
-    background-size: $width-1x $height-1x;
-  }
-}
diff --git a/scss/bootstrap/mixins/_list-group.scss b/scss/bootstrap/mixins/_list-group.scss
deleted file mode 100644
index cd47a4e9fa..0000000000
--- a/scss/bootstrap/mixins/_list-group.scss
+++ /dev/null
@@ -1,21 +0,0 @@
-// List Groups
-
-@mixin list-group-item-variant($state, $background, $color) {
-  .list-group-item-#{$state} {
-    color: $color;
-    background-color: $background;
-
-    &.list-group-item-action {
-      @include hover-focus {
-        color: $color;
-        background-color: darken($background, 5%);
-      }
-
-      &.active {
-        color: $white;
-        background-color: $color;
-        border-color: $color;
-      }
-    }
-  }
-}
diff --git a/scss/bootstrap/mixins/_lists.scss b/scss/bootstrap/mixins/_lists.scss
deleted file mode 100644
index 2518562669..0000000000
--- a/scss/bootstrap/mixins/_lists.scss
+++ /dev/null
@@ -1,7 +0,0 @@
-// Lists
-
-// Unstyled keeps list items block level, just removes default browser padding and list-style
-@mixin list-unstyled {
-  padding-left: 0;
-  list-style: none;
-}
diff --git a/scss/bootstrap/mixins/_nav-divider.scss b/scss/bootstrap/mixins/_nav-divider.scss
deleted file mode 100644
index 4fb37b6224..0000000000
--- a/scss/bootstrap/mixins/_nav-divider.scss
+++ /dev/null
@@ -1,10 +0,0 @@
-// Horizontal dividers
-//
-// Dividers (basically an hr) within dropdowns and nav lists
-
-@mixin nav-divider($color: $nav-divider-color, $margin-y: $nav-divider-margin-y) {
-  height: 0;
-  margin: $margin-y 0;
-  overflow: hidden;
-  border-top: 1px solid $color;
-}
diff --git a/scss/bootstrap/mixins/_pagination.scss b/scss/bootstrap/mixins/_pagination.scss
deleted file mode 100644
index ff36eb6b40..0000000000
--- a/scss/bootstrap/mixins/_pagination.scss
+++ /dev/null
@@ -1,22 +0,0 @@
-// Pagination
-
-@mixin pagination-size($padding-y, $padding-x, $font-size, $line-height, $border-radius) {
-  .page-link {
-    padding: $padding-y $padding-x;
-    font-size: $font-size;
-    line-height: $line-height;
-  }
-
-  .page-item {
-    &:first-child {
-      .page-link {
-        @include border-left-radius($border-radius);
-      }
-    }
-    &:last-child {
-      .page-link {
-        @include border-right-radius($border-radius);
-      }
-    }
-  }
-}
diff --git a/scss/bootstrap/mixins/_reset-text.scss b/scss/bootstrap/mixins/_reset-text.scss
deleted file mode 100644
index 71edb0061a..0000000000
--- a/scss/bootstrap/mixins/_reset-text.scss
+++ /dev/null
@@ -1,17 +0,0 @@
-@mixin reset-text {
-  font-family: $font-family-base;
-  // We deliberately do NOT reset font-size or word-wrap.
-  font-style: normal;
-  font-weight: $font-weight-normal;
-  line-height: $line-height-base;
-  text-align: left; // Fallback for where `start` is not supported
-  text-align: start; // stylelint-disable-line declaration-block-no-duplicate-properties
-  text-decoration: none;
-  text-shadow: none;
-  text-transform: none;
-  letter-spacing: normal;
-  word-break: normal;
-  word-spacing: normal;
-  white-space: normal;
-  line-break: auto;
-}
diff --git a/scss/bootstrap/mixins/_resize.scss b/scss/bootstrap/mixins/_resize.scss
deleted file mode 100644
index 66f233a63c..0000000000
--- a/scss/bootstrap/mixins/_resize.scss
+++ /dev/null
@@ -1,6 +0,0 @@
-// Resize anything
-
-@mixin resizable($direction) {
-  overflow: auto; // Per CSS3 UI, `resize` only applies when `overflow` isn't `visible`
-  resize: $direction; // Options: horizontal, vertical, both
-}
diff --git a/scss/bootstrap/mixins/_screen-reader.scss b/scss/bootstrap/mixins/_screen-reader.scss
deleted file mode 100644
index 812591bc5e..0000000000
--- a/scss/bootstrap/mixins/_screen-reader.scss
+++ /dev/null
@@ -1,33 +0,0 @@
-// Only display content to screen readers
-//
-// See: https://a11yproject.com/posts/how-to-hide-content/
-// See: https://hugogiraudel.com/2016/10/13/css-hide-and-seek/
-
-@mixin sr-only {
-  position: absolute;
-  width: 1px;
-  height: 1px;
-  padding: 0;
-  overflow: hidden;
-  clip: rect(0, 0, 0, 0);
-  white-space: nowrap;
-  border: 0;
-}
-
-// Use in conjunction with .sr-only to only display content when it's focused.
-//
-// Useful for "Skip to main content" links; see https://www.w3.org/TR/2013/NOTE-WCAG20-TECHS-20130905/G1
-//
-// Credit: HTML5 Boilerplate
-
-@mixin sr-only-focusable {
-  &:active,
-  &:focus {
-    position: static;
-    width: auto;
-    height: auto;
-    overflow: visible;
-    clip: auto;
-    white-space: normal;
-  }
-}
diff --git a/scss/bootstrap/mixins/_size.scss b/scss/bootstrap/mixins/_size.scss
deleted file mode 100644
index b9dd48e8df..0000000000
--- a/scss/bootstrap/mixins/_size.scss
+++ /dev/null
@@ -1,6 +0,0 @@
-// Sizing shortcuts
-
-@mixin size($width, $height: $width) {
-  width: $width;
-  height: $height;
-}
diff --git a/scss/bootstrap/mixins/_table-row.scss b/scss/bootstrap/mixins/_table-row.scss
deleted file mode 100644
index f8d61869a4..0000000000
--- a/scss/bootstrap/mixins/_table-row.scss
+++ /dev/null
@@ -1,39 +0,0 @@
-// Tables
-
-@mixin table-row-variant($state, $background, $border: null) {
-  // Exact selectors below required to override `.table-striped` and prevent
-  // inheritance to nested tables.
-  .table-#{$state} {
-    &,
-    > th,
-    > td {
-      background-color: $background;
-    }
-
-    @if $border != null {
-      th,
-      td,
-      thead th,
-      tbody + tbody {
-        border-color: $border;
-      }
-    }
-  }
-
-  // Hover states for `.table-hover`
-  // Note: this is not available for cells or rows within `thead` or `tfoot`.
-  .table-hover {
-    $hover-background: darken($background, 5%);
-
-    .table-#{$state} {
-      @include hover {
-        background-color: $hover-background;
-
-        > td,
-        > th {
-          background-color: $hover-background;
-        }
-      }
-    }
-  }
-}
diff --git a/scss/bootstrap/mixins/_text-emphasis.scss b/scss/bootstrap/mixins/_text-emphasis.scss
deleted file mode 100644
index 1819fb03df..0000000000
--- a/scss/bootstrap/mixins/_text-emphasis.scss
+++ /dev/null
@@ -1,14 +0,0 @@
-// stylelint-disable declaration-no-important
-
-// Typography
-
-@mixin text-emphasis-variant($parent, $color) {
-  #{$parent} {
-    color: $color !important;
-  }
-  a#{$parent} {
-    @include hover-focus {
-      color: darken($color, $emphasized-link-hover-darken-percentage) !important;
-    }
-  }
-}
diff --git a/scss/bootstrap/mixins/_text-hide.scss b/scss/bootstrap/mixins/_text-hide.scss
deleted file mode 100644
index 9ffab169f3..0000000000
--- a/scss/bootstrap/mixins/_text-hide.scss
+++ /dev/null
@@ -1,13 +0,0 @@
-// CSS image replacement
-@mixin text-hide($ignore-warning: false) {
-  // stylelint-disable-next-line font-family-no-missing-generic-family-keyword
-  font: 0/0 a;
-  color: transparent;
-  text-shadow: none;
-  background-color: transparent;
-  border: 0;
-
-  @if ($ignore-warning != true) {
-    @warn "The `text-hide()` mixin has been deprecated as of v4.1.0. It will be removed entirely in v5.";
-  }
-}
diff --git a/scss/bootstrap/mixins/_text-truncate.scss b/scss/bootstrap/mixins/_text-truncate.scss
deleted file mode 100644
index 3504bb1aa5..0000000000
--- a/scss/bootstrap/mixins/_text-truncate.scss
+++ /dev/null
@@ -1,8 +0,0 @@
-// Text truncate
-// Requires inline-block or block for proper styling
-
-@mixin text-truncate() {
-  overflow: hidden;
-  text-overflow: ellipsis;
-  white-space: nowrap;
-}
diff --git a/scss/bootstrap/mixins/_transition.scss b/scss/bootstrap/mixins/_transition.scss
deleted file mode 100644
index 485f76c768..0000000000
--- a/scss/bootstrap/mixins/_transition.scss
+++ /dev/null
@@ -1,16 +0,0 @@
-// stylelint-disable property-blacklist
-@mixin transition($transition...) {
-  @if $enable-transitions {
-    @if length($transition) == 0 {
-      transition: $transition-base;
-    } @else {
-      transition: $transition;
-    }
-  }
-
-  @if $enable-prefers-reduced-motion-media-query {
-    @media screen and (prefers-reduced-motion: reduce) {
-      transition: none;
-    }
-  }
-}
diff --git a/scss/bootstrap/mixins/_visibility.scss b/scss/bootstrap/mixins/_visibility.scss
deleted file mode 100644
index fe523d0ee3..0000000000
--- a/scss/bootstrap/mixins/_visibility.scss
+++ /dev/null
@@ -1,7 +0,0 @@
-// stylelint-disable declaration-no-important
-
-// Visibility
-
-@mixin invisible($visibility) {
-  visibility: $visibility !important;
-}
diff --git a/scss/bootstrap/utilities/_align.scss b/scss/bootstrap/utilities/_align.scss
deleted file mode 100644
index 8b7df9f76c..0000000000
--- a/scss/bootstrap/utilities/_align.scss
+++ /dev/null
@@ -1,8 +0,0 @@
-// stylelint-disable declaration-no-important
-
-.align-baseline    { vertical-align: baseline !important; } // Browser default
-.align-top         { vertical-align: top !important; }
-.align-middle      { vertical-align: middle !important; }
-.align-bottom      { vertical-align: bottom !important; }
-.align-text-bottom { vertical-align: text-bottom !important; }
-.align-text-top    { vertical-align: text-top !important; }
diff --git a/scss/bootstrap/utilities/_background.scss b/scss/bootstrap/utilities/_background.scss
deleted file mode 100644
index 1f18b2f3f3..0000000000
--- a/scss/bootstrap/utilities/_background.scss
+++ /dev/null
@@ -1,19 +0,0 @@
-// stylelint-disable declaration-no-important
-
-@each $color, $value in $theme-colors {
-  @include bg-variant(".bg-#{$color}", $value);
-}
-
-@if $enable-gradients {
-  @each $color, $value in $theme-colors {
-    @include bg-gradient-variant(".bg-gradient-#{$color}", $value);
-  }
-}
-
-.bg-white {
-  background-color: $white !important;
-}
-
-.bg-transparent {
-  background-color: transparent !important;
-}
diff --git a/scss/bootstrap/utilities/_borders.scss b/scss/bootstrap/utilities/_borders.scss
deleted file mode 100644
index fb759c9ba0..0000000000
--- a/scss/bootstrap/utilities/_borders.scss
+++ /dev/null
@@ -1,63 +0,0 @@
-// stylelint-disable declaration-no-important
-
-//
-// Border
-//
-
-.border         { border: $border-width solid $border-color !important; }
-.border-top     { border-top: $border-width solid $border-color !important; }
-.border-right   { border-right: $border-width solid $border-color !important; }
-.border-bottom  { border-bottom: $border-width solid $border-color !important; }
-.border-left    { border-left: $border-width solid $border-color !important; }
-
-.border-0        { border: 0 !important; }
-.border-top-0    { border-top: 0 !important; }
-.border-right-0  { border-right: 0 !important; }
-.border-bottom-0 { border-bottom: 0 !important; }
-.border-left-0   { border-left: 0 !important; }
-
-@each $color, $value in $theme-colors {
-  .border-#{$color} {
-    border-color: $value !important;
-  }
-}
-
-.border-white {
-  border-color: $white !important;
-}
-
-//
-// Border-radius
-//
-
-.rounded {
-  border-radius: $border-radius !important;
-}
-.rounded-top {
-  border-top-left-radius: $border-radius !important;
-  border-top-right-radius: $border-radius !important;
-}
-.rounded-right {
-  border-top-right-radius: $border-radius !important;
-  border-bottom-right-radius: $border-radius !important;
-}
-.rounded-bottom {
-  border-bottom-right-radius: $border-radius !important;
-  border-bottom-left-radius: $border-radius !important;
-}
-.rounded-left {
-  border-top-left-radius: $border-radius !important;
-  border-bottom-left-radius: $border-radius !important;
-}
-
-.rounded-circle {
-  border-radius: 50% !important;
-}
-
-.rounded-pill {
-  border-radius: $rounded-pill !important;
-}
-
-.rounded-0 {
-  border-radius: 0 !important;
-}
diff --git a/scss/bootstrap/utilities/_clearfix.scss b/scss/bootstrap/utilities/_clearfix.scss
deleted file mode 100644
index e92522a94d..0000000000
--- a/scss/bootstrap/utilities/_clearfix.scss
+++ /dev/null
@@ -1,3 +0,0 @@
-.clearfix {
-  @include clearfix();
-}
diff --git a/scss/bootstrap/utilities/_display.scss b/scss/bootstrap/utilities/_display.scss
deleted file mode 100644
index 20aeeb5f3e..0000000000
--- a/scss/bootstrap/utilities/_display.scss
+++ /dev/null
@@ -1,38 +0,0 @@
-// stylelint-disable declaration-no-important
-
-//
-// Utilities for common `display` values
-//
-
-@each $breakpoint in map-keys($grid-breakpoints) {
-  @include media-breakpoint-up($breakpoint) {
-    $infix: breakpoint-infix($breakpoint, $grid-breakpoints);
-
-    .d#{$infix}-none         { display: none !important; }
-    .d#{$infix}-inline       { display: inline !important; }
-    .d#{$infix}-inline-block { display: inline-block !important; }
-    .d#{$infix}-block        { display: block !important; }
-    .d#{$infix}-table        { display: table !important; }
-    .d#{$infix}-table-row    { display: table-row !important; }
-    .d#{$infix}-table-cell   { display: table-cell !important; }
-    .d#{$infix}-flex         { display: flex !important; }
-    .d#{$infix}-inline-flex  { display: inline-flex !important; }
-  }
-}
-
-
-//
-// Utilities for toggling `display` in print
-//
-
-@media print {
-  .d-print-none         { display: none !important; }
-  .d-print-inline       { display: inline !important; }
-  .d-print-inline-block { display: inline-block !important; }
-  .d-print-block        { display: block !important; }
-  .d-print-table        { display: table !important; }
-  .d-print-table-row    { display: table-row !important; }
-  .d-print-table-cell   { display: table-cell !important; }
-  .d-print-flex         { display: flex !important; }
-  .d-print-inline-flex  { display: inline-flex !important; }
-}
diff --git a/scss/bootstrap/utilities/_embed.scss b/scss/bootstrap/utilities/_embed.scss
deleted file mode 100644
index 4497ac0400..0000000000
--- a/scss/bootstrap/utilities/_embed.scss
+++ /dev/null
@@ -1,39 +0,0 @@
-// Credit: Nicolas Gallagher and SUIT CSS.
-
-.embed-responsive {
-  position: relative;
-  display: block;
-  width: 100%;
-  padding: 0;
-  overflow: hidden;
-
-  &::before {
-    display: block;
-    content: "";
-  }
-
-  .embed-responsive-item,
-  iframe,
-  embed,
-  object,
-  video {
-    position: absolute;
-    top: 0;
-    bottom: 0;
-    left: 0;
-    width: 100%;
-    height: 100%;
-    border: 0;
-  }
-}
-
-@each $embed-responsive-aspect-ratio in $embed-responsive-aspect-ratios {
-  $embed-responsive-aspect-ratio-x: nth($embed-responsive-aspect-ratio, 1);
-  $embed-responsive-aspect-ratio-y: nth($embed-responsive-aspect-ratio, 2);
-
-  .embed-responsive-#{$embed-responsive-aspect-ratio-x}by#{$embed-responsive-aspect-ratio-y} {
-    &::before {
-      padding-top: percentage($embed-responsive-aspect-ratio-y / $embed-responsive-aspect-ratio-x);
-    }
-  }
-}
diff --git a/scss/bootstrap/utilities/_flex.scss b/scss/bootstrap/utilities/_flex.scss
deleted file mode 100644
index 3d4266e0d0..0000000000
--- a/scss/bootstrap/utilities/_flex.scss
+++ /dev/null
@@ -1,51 +0,0 @@
-// stylelint-disable declaration-no-important
-
-// Flex variation
-//
-// Custom styles for additional flex alignment options.
-
-@each $breakpoint in map-keys($grid-breakpoints) {
-  @include media-breakpoint-up($breakpoint) {
-    $infix: breakpoint-infix($breakpoint, $grid-breakpoints);
-
-    .flex#{$infix}-row            { flex-direction: row !important; }
-    .flex#{$infix}-column         { flex-direction: column !important; }
-    .flex#{$infix}-row-reverse    { flex-direction: row-reverse !important; }
-    .flex#{$infix}-column-reverse { flex-direction: column-reverse !important; }
-
-    .flex#{$infix}-wrap         { flex-wrap: wrap !important; }
-    .flex#{$infix}-nowrap       { flex-wrap: nowrap !important; }
-    .flex#{$infix}-wrap-reverse { flex-wrap: wrap-reverse !important; }
-    .flex#{$infix}-fill         { flex: 1 1 auto !important; }
-    .flex#{$infix}-grow-0       { flex-grow: 0 !important; }
-    .flex#{$infix}-grow-1       { flex-grow: 1 !important; }
-    .flex#{$infix}-shrink-0     { flex-shrink: 0 !important; }
-    .flex#{$infix}-shrink-1     { flex-shrink: 1 !important; }
-
-    .justify-content#{$infix}-start   { justify-content: flex-start !important; }
-    .justify-content#{$infix}-end     { justify-content: flex-end !important; }
-    .justify-content#{$infix}-center  { justify-content: center !important; }
-    .justify-content#{$infix}-between { justify-content: space-between !important; }
-    .justify-content#{$infix}-around  { justify-content: space-around !important; }
-
-    .align-items#{$infix}-start    { align-items: flex-start !important; }
-    .align-items#{$infix}-end      { align-items: flex-end !important; }
-    .align-items#{$infix}-center   { align-items: center !important; }
-    .align-items#{$infix}-baseline { align-items: baseline !important; }
-    .align-items#{$infix}-stretch  { align-items: stretch !important; }
-
-    .align-content#{$infix}-start   { align-content: flex-start !important; }
-    .align-content#{$infix}-end     { align-content: flex-end !important; }
-    .align-content#{$infix}-center  { align-content: center !important; }
-    .align-content#{$infix}-between { align-content: space-between !important; }
-    .align-content#{$infix}-around  { align-content: space-around !important; }
-    .align-content#{$infix}-stretch { align-content: stretch !important; }
-
-    .align-self#{$infix}-auto     { align-self: auto !important; }
-    .align-self#{$infix}-start    { align-self: flex-start !important; }
-    .align-self#{$infix}-end      { align-self: flex-end !important; }
-    .align-self#{$infix}-center   { align-self: center !important; }
-    .align-self#{$infix}-baseline { align-self: baseline !important; }
-    .align-self#{$infix}-stretch  { align-self: stretch !important; }
-  }
-}
diff --git a/scss/bootstrap/utilities/_float.scss b/scss/bootstrap/utilities/_float.scss
deleted file mode 100644
index 01655e9a52..0000000000
--- a/scss/bootstrap/utilities/_float.scss
+++ /dev/null
@@ -1,9 +0,0 @@
-@each $breakpoint in map-keys($grid-breakpoints) {
-  @include media-breakpoint-up($breakpoint) {
-    $infix: breakpoint-infix($breakpoint, $grid-breakpoints);
-
-    .float#{$infix}-left  { @include float-left; }
-    .float#{$infix}-right { @include float-right; }
-    .float#{$infix}-none  { @include float-none; }
-  }
-}
diff --git a/scss/bootstrap/utilities/_overflow.scss b/scss/bootstrap/utilities/_overflow.scss
deleted file mode 100644
index 8326c30641..0000000000
--- a/scss/bootstrap/utilities/_overflow.scss
+++ /dev/null
@@ -1,5 +0,0 @@
-// stylelint-disable declaration-no-important
-
-@each $value in $overflows {
-  .overflow-#{$value} { overflow: $value !important; }
-}
diff --git a/scss/bootstrap/utilities/_position.scss b/scss/bootstrap/utilities/_position.scss
deleted file mode 100644
index cdf6c115f3..0000000000
--- a/scss/bootstrap/utilities/_position.scss
+++ /dev/null
@@ -1,32 +0,0 @@
-// stylelint-disable declaration-no-important
-
-// Common values
-@each $position in $positions {
-  .position-#{$position} { position: $position !important; }
-}
-
-// Shorthand
-
-.fixed-top {
-  position: fixed;
-  top: 0;
-  right: 0;
-  left: 0;
-  z-index: $zindex-fixed;
-}
-
-.fixed-bottom {
-  position: fixed;
-  right: 0;
-  bottom: 0;
-  left: 0;
-  z-index: $zindex-fixed;
-}
-
-.sticky-top {
-  @supports (position: sticky) {
-    position: sticky;
-    top: 0;
-    z-index: $zindex-sticky;
-  }
-}
diff --git a/scss/bootstrap/utilities/_screenreaders.scss b/scss/bootstrap/utilities/_screenreaders.scss
deleted file mode 100644
index 9f26fde035..0000000000
--- a/scss/bootstrap/utilities/_screenreaders.scss
+++ /dev/null
@@ -1,11 +0,0 @@
-//
-// Screenreaders
-//
-
-.sr-only {
-  @include sr-only();
-}
-
-.sr-only-focusable {
-  @include sr-only-focusable();
-}
diff --git a/scss/bootstrap/utilities/_shadows.scss b/scss/bootstrap/utilities/_shadows.scss
deleted file mode 100644
index f5d03fcd59..0000000000
--- a/scss/bootstrap/utilities/_shadows.scss
+++ /dev/null
@@ -1,6 +0,0 @@
-// stylelint-disable declaration-no-important
-
-.shadow-sm { box-shadow: $box-shadow-sm !important; }
-.shadow { box-shadow: $box-shadow !important; }
-.shadow-lg { box-shadow: $box-shadow-lg !important; }
-.shadow-none { box-shadow: none !important; }
diff --git a/scss/bootstrap/utilities/_sizing.scss b/scss/bootstrap/utilities/_sizing.scss
deleted file mode 100644
index f376488022..0000000000
--- a/scss/bootstrap/utilities/_sizing.scss
+++ /dev/null
@@ -1,20 +0,0 @@
-// stylelint-disable declaration-no-important
-
-// Width and height
-
-@each $prop, $abbrev in (width: w, height: h) {
-  @each $size, $length in $sizes {
-    .#{$abbrev}-#{$size} { #{$prop}: $length !important; }
-  }
-}
-
-.mw-100 { max-width: 100% !important; }
-.mh-100 { max-height: 100% !important; }
-
-// Viewport additional helpers
-
-.min-vw-100 { min-width: 100vw !important; }
-.min-vh-100 { min-height: 100vh !important; }
-
-.vw-100 { width: 100vw !important; }
-.vh-100 { height: 100vh !important; }
diff --git a/scss/bootstrap/utilities/_spacing.scss b/scss/bootstrap/utilities/_spacing.scss
deleted file mode 100644
index 351136790a..0000000000
--- a/scss/bootstrap/utilities/_spacing.scss
+++ /dev/null
@@ -1,73 +0,0 @@
-// stylelint-disable declaration-no-important
-
-// Margin and Padding
-
-@each $breakpoint in map-keys($grid-breakpoints) {
-  @include media-breakpoint-up($breakpoint) {
-    $infix: breakpoint-infix($breakpoint, $grid-breakpoints);
-
-    @each $prop, $abbrev in (margin: m, padding: p) {
-      @each $size, $length in $spacers {
-        .#{$abbrev}#{$infix}-#{$size} { #{$prop}: $length !important; }
-        .#{$abbrev}t#{$infix}-#{$size},
-        .#{$abbrev}y#{$infix}-#{$size} {
-          #{$prop}-top: $length !important;
-        }
-        .#{$abbrev}r#{$infix}-#{$size},
-        .#{$abbrev}x#{$infix}-#{$size} {
-          #{$prop}-right: $length !important;
-        }
-        .#{$abbrev}b#{$infix}-#{$size},
-        .#{$abbrev}y#{$infix}-#{$size} {
-          #{$prop}-bottom: $length !important;
-        }
-        .#{$abbrev}l#{$infix}-#{$size},
-        .#{$abbrev}x#{$infix}-#{$size} {
-          #{$prop}-left: $length !important;
-        }
-      }
-    }
-
-    // Negative margins (e.g., where `.mb-n1` is negative version of `.mb-1`)
-    @each $size, $length in $spacers {
-      @if $size != 0 {
-        .m#{$infix}-n#{$size} { margin: -$length !important; }
-        .mt#{$infix}-n#{$size},
-        .my#{$infix}-n#{$size} {
-          margin-top: -$length !important;
-        }
-        .mr#{$infix}-n#{$size},
-        .mx#{$infix}-n#{$size} {
-          margin-right: -$length !important;
-        }
-        .mb#{$infix}-n#{$size},
-        .my#{$infix}-n#{$size} {
-          margin-bottom: -$length !important;
-        }
-        .ml#{$infix}-n#{$size},
-        .mx#{$infix}-n#{$size} {
-          margin-left: -$length !important;
-        }
-      }
-    }
-
-    // Some special margin utils
-    .m#{$infix}-auto { margin: auto !important; }
-    .mt#{$infix}-auto,
-    .my#{$infix}-auto {
-      margin-top: auto !important;
-    }
-    .mr#{$infix}-auto,
-    .mx#{$infix}-auto {
-      margin-right: auto !important;
-    }
-    .mb#{$infix}-auto,
-    .my#{$infix}-auto {
-      margin-bottom: auto !important;
-    }
-    .ml#{$infix}-auto,
-    .mx#{$infix}-auto {
-      margin-left: auto !important;
-    }
-  }
-}
diff --git a/scss/bootstrap/utilities/_text.scss b/scss/bootstrap/utilities/_text.scss
deleted file mode 100644
index 0edb8e58ba..0000000000
--- a/scss/bootstrap/utilities/_text.scss
+++ /dev/null
@@ -1,67 +0,0 @@
-// stylelint-disable declaration-no-important
-
-//
-// Text
-//
-
-.text-monospace { font-family: $font-family-monospace; }
-
-// Alignment
-
-.text-justify  { text-align: justify !important; }
-.text-wrap     { white-space: normal !important; }
-.text-nowrap   { white-space: nowrap !important; }
-.text-truncate { @include text-truncate; }
-
-// Responsive alignment
-
-@each $breakpoint in map-keys($grid-breakpoints) {
-  @include media-breakpoint-up($breakpoint) {
-    $infix: breakpoint-infix($breakpoint, $grid-breakpoints);
-
-    .text#{$infix}-left   { text-align: left !important; }
-    .text#{$infix}-right  { text-align: right !important; }
-    .text#{$infix}-center { text-align: center !important; }
-  }
-}
-
-// Transformation
-
-.text-lowercase  { text-transform: lowercase !important; }
-.text-uppercase  { text-transform: uppercase !important; }
-.text-capitalize { text-transform: capitalize !important; }
-
-// Weight and italics
-
-.font-weight-light   { font-weight: $font-weight-light !important; }
-.font-weight-lighter { font-weight: $font-weight-lighter !important; }
-.font-weight-normal  { font-weight: $font-weight-normal !important; }
-.font-weight-bold    { font-weight: $font-weight-bold !important; }
-.font-weight-bolder  { font-weight: $font-weight-bolder !important; }
-.font-italic         { font-style: italic !important; }
-
-// Contextual colors
-
-.text-white { color: $white !important; }
-
-@each $color, $value in $theme-colors {
-  @include text-emphasis-variant(".text-#{$color}", $value);
-}
-
-.text-body { color: $body-color !important; }
-.text-muted { color: $text-muted !important; }
-
-.text-black-50 { color: rgba($black, .5) !important; }
-.text-white-50 { color: rgba($white, .5) !important; }
-
-// Misc
-
-.text-hide {
-  @include text-hide($ignore-warning: true);
-}
-
-.text-decoration-none { text-decoration: none !important; }
-
-// Reset
-
-.text-reset { color: inherit !important; }
diff --git a/scss/bootstrap/utilities/_visibility.scss b/scss/bootstrap/utilities/_visibility.scss
deleted file mode 100644
index 823406dc3c..0000000000
--- a/scss/bootstrap/utilities/_visibility.scss
+++ /dev/null
@@ -1,11 +0,0 @@
-//
-// Visibility utilities
-//
-
-.visible {
-  @include invisible(visible);
-}
-
-.invisible {
-  @include invisible(hidden);
-}
-- 
2.39.2