Bootstrap 3 navs pills dropdowns

<!DOCTYPE html>
<title>My Example</title>

<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<div class="container-fluid">
		
<ul class="nav nav-pills">
<li class="active"><a href="#">HTML</a></li>
<li><a href="#">CSS</a></li>
<li><a href="#">JavaScript</a></li>

<li class="dropdown">
<a class="dropdown-toggle" data-toggle="dropdown" href="#" role="button" aria-haspopup="true" aria-expanded="false">
Preview
<span class="caret"></span>
</a>
<ul class="dropdown-menu" aria-labelledby="Preview">
<li><a href="#">Mobile Phone</a></li>
<li><a href="#">Tablet</a></li>
<li><a href="#">Laptop</a></li>
<li><a href="#">Desktop</a></li>
</ul>
</li>

</ul>

</div>
		

<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>

<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>

<script>
// Initialize tooltip component
$(function () {
  $('[data-toggle="tooltip"]').tooltip()
})

// Initialize popover component
$(function () {
  $('[data-toggle="popover"]').popover()
})
</script>