<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>
<div class="container">
<div class="row">
<nav>
<div class="vmenu">
<h4><a href="#">Home</a>
</h4>
</div>
<div class="vmenu">
<h4><a href="#">Mobile</a>
<ol id="s3">
<li><a href="#">Nokia</a></li>
<li><a href="#">Panasonic</a></li>
<li><a href="#">Lava</a></li>
</ol>
</h4>
</div>
<div class="vmenu">
<h4><a href="#">Fridge</a>
<ol id="s4">
<li><a href="#">LG</a></li>
<li><a href="#">Samsung</a></li>
<li><a href="#">kelvinator</a></li>
<li><a href="#">whirlpool</a></li>
</ol>
</h4>
