p:before {content:attr(class) ": ";}
<?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>CSS Example</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <style type='text/css'> /* CSS Document */ p:before {content:attr(class) ": ";} </style> </head> <body> <p class="Note">Here is a note.</p> <p class="Reference">Here is a reference.</p> <p class="Explanation">Here is an explanation.</p> </body> </html>