<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="modal in" style="display: block;">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<h4 class="modal-title">Are you sure???</h4>
</div>
<div class="modal-body">
<p>Are you sure you want to delete (this)?</p>
<div class="row">
<div class="col-12-xs text-center">
<button class="btn btn-success btn-md">Yes</button>
<button class="btn btn-danger btn-md">No</button>
</div>
</div>
</div>
</div>
</div>
</div>
