<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">
<div class="col-sm-12">
<h3>Pages:</h3>
<ul>
<li><a href="#"><strong>Home</strong></a></li>
<li><a href="#"><strong>About</strong></a></li>
<ul><li><a href="#">Subpage 1</a></li><li><a href="#">Subpage 2</a></li><li><a href="#">Subpage 3</a></li><li><a href="#">Subpage 4</a></li></ul>
<li><a href="#"><strong>Portfolio</strong></a></li>
<ul><li><a href="#">Subpage 1</a></li><li><a href="#">Subpage 2</a></li></ul>
<li><a href="#"><strong>Contact</strong></a></li>
</ul>
</div>
</div>
</div>