<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><head> <title>CSS Reference File</title> <link href="mailto:rhauck@adobe.com" rel="author" title="Rebecca Hauck" /> <style> body { margin: 0; } #green-square { position: absolute; top: 50px; left: 10px; width: 240px; height: 240px; background-color: green; } </style></head> <body> <p>The test passes if there is green square and no red.</p> <div id="green-square"></div> </body></html>