<!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 Multi-column Layout Test: a column box can not act as containing block for elements with 'position: absolute'</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/" /> <!-- 2013-07-27 --> <link rel="help" href="http://www.w3.org/TR/css3-multicol/#the-multi-column-model" title="2. The multi-column model" /> <link rel="match" href="multicol-containing-001-ref.xht"/> <meta name="flags" content="ahem" /> <meta name="assert" content="This test checks that a column box does not establish containing block for elements with 'position: absolute'." /> <style type="text/css"><![CDATA[ @font-face { font-family: Ahem; src: url("../../../fonts/Ahem.ttf"); } ]]></style> <style type="text/css"><![CDATA[ div { background-color: yellow; border: gray solid 1em; color: black; font: 1.25em/1 Ahem; orphans: 1; widows: 1; width: 12em; -moz-column-count: 3; -moz-column-gap: 0; } span { color: red; position: absolute; top: -1em; } /* In this test, the initial containing block establishes containing block for such red span. Therefore, the 2 short red stripes should be positioned out of view, just outside the top edge of viewport. */ ]]></style> </head> <body> <div> bl ac <span>re dd</span> bl ac bl ac </div> </body> </html>