<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <title>CSS Multi-column Layout Test: multicolumn and inheritance</title> <link rel="author" title="Opera Software ASA" href="http://www.opera.com/"> <link rel="reviewer" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/"> <!-- 2013-08-08 --> <link rel="help" href="http://www.w3.org/TR/css3-multicol/#pseudo-algorithm" title="3.4 Pseudo-algorithm"> <link rel="match" href="reference/multicol-inherit-001-ref.htm"> <meta name="flags" content="ahem"> <style type="text/css"> body { font: 1.25em/1 Ahem; width: 34em; } body > div { column-count: 3; column-gap: 1em; /* N == 3; 34em : available width - 2em : horizontal margin of external div - 2em : 2 column gaps ========== 30em So, W == 10em; 30em - 6em : 3 mult by 2em: horizontal margin of 3 internal divs ========== 24em : 8em for each of the 3 column boxes without their horizontal margins */ } div { background-color: yellow; color: black; margin: 0 1em 1em; orphans: 1; widows: 1; } </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>