<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/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">
<ul class="list-unstyled multilevels">
<li>Category name</li>
<li>
<ul>
<li><a href="#">Sub-cat</a></li>
<li><a href="#">Sub-cat</a></li>
<li><a href="#">Sub-cat</a></li>
<li><a href="#">Sub-cat</a></li>
<li>
<ul>
<li><a href="#">Sub-Sub-cat</a></li>
</ul>
</li>
</ul>
</li>
<li>Category name</li>
<li>
<ul>
<li><a href="#">Sub-cat</a></li>
<li><a href="#">Sub-cat</a></li>
<li><a href="#">Sub-cat</a></li>
<li><a href="#">Sub-cat</a></li>
</ul>
</li>
</ul>
</div>
</div>
