<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>
<div class="container">
<div class="row">
<h2>FreeRider HD</h2>
<div class="embed-responsive embed-responsive-16by9">
<iframe width="100%" height="350" src="http://www.freeriderhd.com/game/51972-gravity-cave?embedded=true" frameborder="0" allowfullscreen style="border: 1px solid #000;" scrolling="no"></iframe>
</div>
</div>
</div>