<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script> <script src="//code.jquery.com/jquery-1.11.1.min.js"></script> <!------ Include the above in your HEAD tag ----------> <!-- --> <br> <!-- --> <div class="well"> Look, I'm in a well! </div> <div class="well well-sm"> Look, I'm in a small well! </div> <div class="well well-lg"> Look, I'm in a large well! </div>

.well{ width:50%; margin-left:200px; }