<!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 Reftest Reference</title> <link rel="author" title="Opera Software ASA" href="http://www.opera.com/" /> <link rel="reviewer" title="GĂ©rard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> <!-- 2013-08-14 --> <meta name="flags" content="" /> <style type="text/css"><![CDATA[ body {margin: 0em;} div { background-color: yellow; font: 1.25em/1 serif; height: 5em; position: relative; width: 41em; } div > div { background-color: blue; font: inherit; height: 3em; position: absolute; top: 0em; width: 2em } div#first-blue { background-color: blue; left: 29em; } div#second-blue { background-color: blue; left: 33em; } div#third-blue { background-color: blue; height: 2em; left: 37em; } ]]></style> </head> <body> <div> <div id="first-blue"></div> <div id="second-blue"></div> <div id="third-blue"></div> </div> </body> </html>