<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//netdna.bootstrapcdn.com/bootstrap/3.0.1/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="span3 well"> <center> <a href="#aboutModal" data-toggle="modal" data-target="#myModal">open</a </center> </div> <!-- Modal --> <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> </div> <div class="modal-body"> </div> <div class="modal-footer"> <center> <button type="button" class="btn btn-default" data-dismiss="modal">close</button> </center> </div> </div> </div> </div> </div>