The doctype tells the web browser what version of HTML we're using. Without it, the browser might not display the page correctly.

Since we're using the latest version, we use <!doctype html>.

<html>
<head>
<title>My webpage</title>
</head>
<body>
<h1>My favorite things</h1>
<p>
Raindrops on <em>roses</em><br>
Whiskers on <strong>kittens</strong>
</p>
</body>
</html>]]>

Make sure to pick <!doctype html>.