Notice the 1 in <h1>? That's there because there are different heading types that vary in size.

Let's add a few extra heading tags in ascending order to see what happens.

<html><body><h1>My favorite things</h1><h2>Raindrops on roses</h2><h3>Whiskers on kittens</h3>Bright copper kettles</body></html>
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Great stuff! See how the <h1> is the biggest heading? The 1 means it has the highest level of importance.

Maybe the ascending order would be <h1>, <h2>, and finally <h3>.