You can edit / change the code and click run button <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Html Heading Elements</title> <link rel="stylesheet" type="text/css" href="../../../html/practice/css/mystyle.css"> <script type="text/javascript" href="myjavascript.js"></script> <script>var clicky_site_ids = clicky_site_ids || []; clicky_site_ids.push(101319977);</script><script async src="//static.getclicky.com/js"></script> <p style="color:blue;">All heading elements example</p> <h1 style="color:red;">Heading level 1</h1> <h2 style="color:blue;">Heading level 2</h2> <h3 style="color:pink;">Heading level 3</h3> <h4 style="color:green;">Heading level 4</h4> <h5 style="color:black;">Heading level 5</h5> <h6 style="color:orange;">Heading level 6</h6>