<!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>
<header class="w3-container w3-teal">
<h1>A Visible Header</h1>
</header>
<p>There is a hidden footer below me.</p>
<footer class="w3-container w3-hide w3-teal">
<h5>A Hidden Footer</h5>
</footer>
</body>
</html>