<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"> <h2>Create your snippet's HTML, CSS and Javascript in the editor tabs</h2> <iframe width="560" height="315" src="https://www.youtube.com/embed/I4urVZh1uZE" frameborder="0" allowfullscreen></iframe> https://github.com/davatron5000/FitVids.js </div> </div>

<script src="https://cdnjs.cloudflare.com/ajax/libs/fitvids/1.1.0/jquery.fitvids.min.js"></script> <script> $(document).ready(function(){ $('.container').fitVids(); }); </script>