<!DOCTYPE html>
<html>
<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="/lib/w3.css">
<body>
<div class="w3-container w3-blue">
<h1>I am Heading 1</h1>
<p>I am a paragraph.</p>
</div>
</body>
</html>