<!DOCTYPE html>
<html>
<title>W3.CSS</title>
<link type="text/css" rel="stylesheet" href="../lib/w3.css">
<body>
<div class="w3-container">
<h1>This is Heading 1</h1>
<h2>This is Heading 2</h2>
<h3>This is Heading 3</h3>
<h4>This is Heading 4</h4>
<h5>This is Heading 5</h5>
<h6>This is Heading 6</h6>
<p>This is a paragraph.</p>
</div>
</body>
</html>