<root> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <style type="text/css"> root, html, body { display: block; margin: 0; padding: 0; } #the-root { padding: 20px 0; } #the-html { background-color: lightgreen; } #the-body { background-color: green; height: 100px; } </style> </head> <body> <div id="the-root"> <div id="the-html"> <div id="the-body"></div> </div> </div> </body> </html> </root>
