Bootstrap Skeleton
This is a simple Bootstrap skeleton. You can fork it to get a ready to use Bootstrap fiddle.
HTML
<script src="http://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/2.1.0/bootstrap.min.js"></script>
<div class="container">
<div class="alert fade in">
<button type="button" class="close" data-dismiss="alert">×</button>
<p>
<strong>Warning!</strong> Would you like to perform some arbitrary action?
</p>
<button class="btn btn-warning">Action</button>
</div>
<div class="alert alert-error fade in">
<button type="button" class="close" data-dismiss="alert">×</button>
<p>
<strong>Danger!</strong> Would you like to perform some arbitrary action?
</p>
<button class="btn btn-danger">Action</button>
</div>
<div class="alert alert-info fade in">
<button type="button" class="close" data-dismiss="alert">×</button>
<p>
<strong>Interesting!</strong> Would you like to perform some arbitrary action?
</p>
<button class="btn btn-info">Action</button>
</div>
</div>
CSS
@import url('http://twitter.github.com/bootstrap/assets/css/bootstrap.css');
.container {
margin-top: 10px;
}