<!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-bottom using 'em' units with a positive zero value, +0em</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/" /> <!-- 2012-08-13 --> <link rel="help" href="http://www.w3.org/TR/CSS21/box.html#propdef-margin-bottom" /> <link rel="help" href="http://www.w3.org/TR/CSS21/box.html#margin-properties" /> <link rel="match" href="../reference/ref-no-vert-space-between.xht" /> <meta name="assert" content="The 'margin-bottom' property sets a positive zero length value in 'em' units." /> <style type="text/css"> #div1 { border-bottom: 5px solid blue; margin-bottom: +0em; } #div2 { border-top: 5px solid orange; } </style> </head> <body> <p>Test passes if there is <strong>no space between</strong> the blue and orange lines.</p> <div id="div1"></div> <div id="div2"></div> </body> </html>