<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div class="row">
<h2>Vertical Menu Bar / Navigation / Tabs</h2>
</div>
<div class="row">
<div class="col-md-4">
<div class="panel-group" id="accordion" role="tablist" aria-multiselectable="true">
<div class="panel panel-primary">
<div class="panel-heading" role="tab" id="headingOne">
<h4 class="panel-title">
<a role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseOne" aria-expanded="false" aria-controls="collapseOne" class="collapsed">
Collapsible Group Item #1 <span class="glyphicon glyphicon-plus pull-right" aria-hidden="true"></span>
</a>
</h4>
</div>
<div id="collapseOne" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingOne" aria-expanded="false" style="height: 0px;">
<div class="panel-body">
<div class="list-group">
<a href="#" class="list-group-item"> <span class="glyphicon glyphicon-link" aria-hidden="true"></span> Menu Item</a>
<a href="#" class="list-group-item"> <span class="glyphicon glyphicon-link" aria-hidden="true"></span> Menu Item</a>
<a href="#" class="list-group-item"> <span class="glyphicon glyphicon-link" aria-hidden="true"></span> Menu Item</a>
</div>
</div>
</div>
</div>
<div class="panel panel-primary">
<div class="panel-heading" role="tab" id="headingTwo">
<h4 class="panel-title">
