<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<h1>On Hover Menu Expand</h1>
<ul>
<li>Lorem ipsum dolor sit amet</li>
<li>Consectetur adipisicing elit</li>
<li>Laboriosam rem quisquam vel nulla</li>
<li>Exercitationem eaque facilis quasi aliquam dolorem</li>
</ul>
