<div class="container">
    <h1>This is an example</h1>
    <p>It uses <a href="https://getbootstrap.com/">Bootstrap</a> for styling.</p>
    <img class="img-contain img-rounded" src="http://i.giphy.com/o0vwzuFwCGAFO.gif">
</div>

External CSS

  1. https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css

External JavaScript

This Pen doesn't use any external JavaScript resources.