You can edit / change the code and click run button <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <style> #mypara1 { color: green; } #mypara2 { color: red; } </style> <script>var clicky_site_ids = clicky_site_ids || []; clicky_site_ids.push(101319977);</script><script async src="//static.getclicky.com/js"></script> <p id="mypara1">Hello World!</p> <p id="mypara2">This is effected by the selector</p>