<html>
<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
<body>
<div class="w3-container w3-teal">
<h1>Header</h1>
</div>
<div class="w3-container">
<p>The w3-container class can be used to display headers and footers.</p>
</div>
<div class="w3-container w3-teal">
<h5>Footer</h5>
<p>© Copyright whatever</p>
</div>
</body>
</html>