<!DOCTYPE html>
<html lang="en">
<head>
<title>Heading Example</title>
<meta charset="utf-8">
</head>
<body>
<h1>Test 1</h1>
<h2>Test 2</h2>
<h3>Test 3</h3>
<h4>Test 4</h4>
<h5>Test 5</h5>
<h6>Test 6</h6>
</body>
</html>