<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div class="row">
<div id="myModal" class="modal fade in" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<a class="btn btn-default" data-dismiss="modal"><span class="glyphicon glyphicon-remove"></span></a>
<h4 class="modal-title" id="myModalLabel">Modal Heading</h4>
</div>
<div class="modal-body">
<h4>Text in a modal</h4>
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</div>
<div class="modal-footer">
<div class="btn-group">
<button class="btn btn-danger" data-dismiss="modal">Cancel</button>
<button class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>
</div>
<a data-toggle="modal" href="#myModal" class="btn btn-primary">Launch demo modal</a>
</div>
</div>