<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> <!------ Include the above in your HEAD tag ----------> <div class="container" > <div class="row"> <div class="col4"> <ul id="tree1"> <li><a href="#">TECH</a> <ul> <li>Company Maintenance</li> <li>Employees <ul> <li>Reports <ul> <li>Report1</li> <li>Report2</li> <li>Report3</li> </ul> </li> <li>Employee Maint.</li> </ul> </li> <li>Human Resources</li> </ul> </li> </ul> </div> </div> </div>