<link href="//netdna.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div class="row">
<button class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">
Launch demo modal
</button>
<div id="myModal" class="modal fade">
<div class="modal-dialog modal-sm">
<div class="modal-content">
<div class="modal-header">
Allow Children?
</div>
<div class="modal-body">
<p>One fine body...</p>
<div class="btn-group btn-group-justified">
<div class="btn-group"><button type="button" class="btn btn-default" data-dismiss="modal">Close</button></div>
<div class="btn-group"><button type="button" class="btn btn-primary">Save changes</button></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
