<link href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/js/bootstrap.min.js"></script> <script src="//code.jquery.com/jquery-1.11.1.min.js"></script> <!------ Include the above in your HEAD tag ----------> <div class="container"> <div class="row"> <div class="span12"> <div class="thumbnail center well well-small text-center"> <form action="" method="post"> <div class="input-prepend"><span class="add-on"><i class="icon-envelope"></i></span> <input type="text" id="" name="" placeholder="your@email.com"> </div> <input type="submit" value="Subscribe Now!" class="btn btn-large" /> </form> </div> </div> </div> </div>