How to make headings in html

You are going to learn how to put headings in html. You can make a lot of heading for each paragraph and also you can put the title of your webpage. The title of the webpage will be the biggest of them all. Then the rest will be like subheadings and will be smaller. You can put heads anywhere but you have to start it with <h1> and end it with </h1>. When you make more headings you have to put<h2>, <h3>, and so on.

Ex.
<h1>This is a heading</h1>
<h2>This is a heading</h2>
<h3>This is a heading</h3>