<link href="//cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.2.10/semantic.min.css" rel="stylesheet" id="bootstrap-css"> <script src="//cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.2.10/semantic.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"> <h2>Create your snippet's HTML, CSS and Javascript in the editor tabs</h2> </div> </div>