previews: added margin between sections

diff --git a/css/docs.css b/css/docs.css
index 39eff93..93612f8 100755 (executable)
--- a/css/docs.css
+++ b/css/docs.css
@@ -17,6 +17,10 @@ body {
   background-position: 0 40px;
 }
 
+section {
+  margin-top: 100px;
+}
+
 /* Jumbotrons
 -------------------------------------------------- */
 .jumbotron {