<!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: '-moz-column-count' and inherit</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/" /> <!-- 2013-08-08 --> <link rel="help" href="http://www.w3.org/TR/css3-multicol/#cc" title="3.2 '-moz-column-count'" /> <link rel="help" href="http://www.w3.org/TR/css3-values/#common-keywords" title="3.1.1. CSS-wide keywords: 'initial' and 'inherit'" /> <link rel="match" href="multicol-inherit-002-ref.xht" /> <meta name="flags" content="ahem" /> <meta name="assert" content="This test checks that '-moz-column-count' can be inherited by setting it with the CSS-wide keyword 'inherit'." /> <style type="text/css"><![CDATA[ @font-face { font-family: Ahem; src: url("../../../fonts/Ahem.ttf"); } ]]></style> <style type="text/css"><![CDATA[ body > div { background-color: blue; -moz-column-count: 3; -moz-column-gap: 1em; font: 1.25em/1 Ahem; width: 32em; /* N == 3; 32em - 2em : 2 column gaps ========== 30em : available width of the 3 inner multi-column elements So, W == 10em; 30em - 6em : 3 mult by 2em: horizontal margin of 3 inner multi-column elements - 6em : 3 mult by 2em: horizontal column-gaps of all 3 inner multi-column elements ========== 18em : 6em for each of the 3 column boxes without their own horizontal margins So, each column boxes of inner multi-column elements is 2em wide. */ } div { color: black; margin: 1em; orphans: 1; widows: 1; } div > div { background-color: yellow; -moz-column-count: inherit; -moz-column-gap: 1em; } div > div:first-child {margin-top: 0;} ]]></style> </head> <body> <div> <div> aa aa aa aa aa aa aa aa </div> <div> mm mm mm mm mm mm mm mm </div> <div> xx xx xx xx xx xx xx xx </div> </div> </body> </html>