<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script> <script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <!------ Include the above in your HEAD tag ----------> <div class="container"> <div class="row"> <div class="card w-50"> <div class="card-body"> <ul class="nav nav-tabs"> <li class="nav-item"> <a class="nav-link active" href="#">Hierarchy</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Discussion</a> </li> <li class="nav-item"> <a class="nav-link" href="#">Modules</a> </li> </ul> </div> </div> </div> </div>