JSFiddle - React, Tailwind, and code Playground
by sandro_paganotti
HTML
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<ul class="list-group menu">
<li class="list-group-item">
<div class="dropdown">
<a id="dLabel" data-target="#" href="http://example.com" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">
Dropdown trigger
<span class="caret"></span>
</a>
<ul class="dropdown-menu" aria-labelledby="dLabel">
<li class="list-group-item">Dapibus ac facilisis in</li>
<li class="list-group-item">Morbi leo risus</li>
<li class="list-group-item">Porta ac consectetur ac</li>
</ul>
</div>
</li>
<li class="list-group-item">Dapibus ac facilisis in</li>
<li class="list-group-item">Morbi leo risus</li>
<li class="list-group-item">Porta ac consectetur ac</li>
<li class="list-group-item">Vestibulum at eros</li>
<li class="list-group-item">Cras justo odio</li>
<li class="list-group-item">Dapibus ac facilisis in</li>
<li class="list-group-item">Morbi leo risus</li>
<li class="list-group-item">Porta ac consectetur ac</li>
<li class="list-group-item">Vestibulum at eros</li>
</ul>
CSS
.menu{
width: 300px;
height: 300px;
overflow: auto;
}