<link href="//netdna.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<link href="//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet">
<div class="nav-side-menu">
<div class="brand">Brand Logo</div>
<i class="fa fa-bars fa-3x toggle-btn" data-toggle="collapse" data-target="#menu-content"></i>
<div class="menu-list">
<ul id="menu-content" class="menu-content collapse out">
<li>
<a href="#">
<i class="fa fa-dashboard fa-lg"></i> Dashboard
</a>
</li>
<li data-toggle="collapse" data-target="#products" class="collapsed">
<a href="#"><i class="fa fa-gift fa-lg"></i> Products <span class="arrow"></span></a>
</li>
<ul class="sub-menu collapse out" id="products">
<li>New Products 1</li>
<li>New Products 2</li>
<li>New Products 3</li>
</ul>
<li data-toggle="collapse" data-target="#service" class="collapsed">
<a href="#"><i class="fa fa-globe fa-lg"></i> Services <span class="arrow"></span></a>
</li>