How to Create HTML Heading Elements

This is html first heading 1

This is html first heading 2

This is html first heading 3

This is html first heading 4

This is html first heading 5

This is html first heading 6

Example

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <meta http-equiv="X-UA-Compatible" content="ie=edge">
        <title>heading</title>
    </head>
    <body>
<h1>This is html first heading 1</h1>
<h2>This is html first heading 2</h2>
<h3>This is html first heading 3</h3>
<h4>This is html first heading 4</h4>
<h5>This is html first heading 5</h5>
<h6>This is html first heading 6</h6>        
    </body>
    </html>