<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="w3-panel w3-info">
<p>CSS is a language that describes the style of an HTML document.</p>
<p>CSS describes how HTML elements should be displayed.</p>
<p>This tutorial will teach you CSS from basic to advanced.</p>
</div>
