<!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: Floating non-replaced elements with left and right margins as 'auto'</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/" /> <!-- 2012-04-08 --> <link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#float-width" /> <link rel="match" href="float-non-replaced-width-001-ref.xht" /> <meta name="assert" content="If both 'margin-left' and margin-right' are computed as 'auto' their used value is as '0'." /> <style type="text/css"> #div1 { border: solid black; height: 2in; width: 2in; } div div { background-color: blue; float: left; margin-left: auto; margin-right: auto; height: 1in; width: 1in; } </style> </head> <body> <p>Test passes if the filled blue square is in the <strong>upper-left corner</strong> of the hollow black square.</p> <div id="div1"> <div></div> </div> </body> </html>