<!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 class="w3-container">
<h2>w3-section</h2>
<div class="w3-container w3-section w3-red">
The w3-section adds a 16px margin (top and bottom) to an element.
</div>
<div class="w3-container w3-section w3-green">
This makes an element behave like a paragraph.
</div>
</body>
</html>