<!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 Test: Margin collapsing with the root element</title> <link rel="author" title="Microsoft" href="http://www.microsoft.com/" /> <link rel="reviewer" title="GĂ©rard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> <!-- 2012-08-15 --> <link rel="help" href="http://www.w3.org/TR/CSS21/box.html#collapsing-margins" /> <link rel="match" href="margin-collapse-020-ref.xht" /> <meta name="flags" content="ahem image" /> <meta name="assert" content="For HTML pages the html element does not collapse its margins with other elements." /> <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" /> <style type="text/css"> html { background: url('support/margin-collapse-020.png') 0 -1em no-repeat; font: 20px/1em Ahem; margin-top: 1em; } body { margin: 0; } div { background: green; margin-top: 1em; height: 1em; width: 5em; } p { font: 12pt serif; } </style> </head> <body> <div></div> <p>Test passes if there is <strong>no red</strong>.</p> </body> </html>