<div class="row">
<div class="span12">
- <div class="alert alert-block">
+ <div class="alert alert-warning alert-block">
<a class="close">×</a>
<h4 class="alert-heading">Alert block</h4>
<p>Best check yo self, you're not looking too good. Nulla vitae elit libero, a pharetra augue. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.</p>