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diff --git a/testing/web-platform/tests/css/css-multicol/multicol-nested-margin-004.xht b/testing/web-platform/tests/css/css-multicol/multicol-nested-margin-004.xht new file mode 100644 index 0000000000..bd8dc51acd --- /dev/null +++ b/testing/web-platform/tests/css/css-multicol/multicol-nested-margin-004.xht @@ -0,0 +1,101 @@ +<!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: nested multicolumn and nested margin-top</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/" /> <!-- 2013-08-14 --> + <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-nested-margin-004-ref.xht" /> + <meta name="flags" content="ahem" /> + <meta name="assert" content="This test checks that due to a top margin only set on the first child element of a nested multicol element that will not collapse with the margins of the multicol element, then the height of an multi-column element can make its other inner multi-column (with a zero margin-top) element break into its own column boxes." /> + <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" /> + <style type="text/css"><![CDATA[ + body > div + { + font: 1.25em/1 Ahem; + margin: 1em; + width: 41em; + /* + This test requires a viewport width of 860px + */ + } + + div + { + background: yellow; + color: black; + margin: 1em; + orphans: 1; + widows: 1; + + column-count: 3; + column-gap: 1em; + } + + div div {margin: 0 1em;} + + div div:first-child {margin: 1em 1em 0;} + + /* + + N == 3; + + 43em - 2em (horizontal margins) == available-width + + W == max(0, (available-width - ((N - 1) * column-gap)) / N); + W == max(0, (41em - ((3 - 1) * 1em)) / 3); + W == max(0, (41em - (2 * 1em)) / 3); + W == max(0, (41em - 2em) / 3); + W == max(0, 39em / 3); + W == max(0, 13em); + W == 13em; + + 13em : width of each outer column box + - + 2em : horizontal margin of each div inside + ======= + 11em : width of each inner multi-column elements + + N == 3; + + W == max(0, (available-width - ((N - 1) * column-gap)) / N); + W == max(0, (11em - ((3 - 1) * 1em)) / 3); + W == max(0, (11em - (2 * 1em)) / 3); + W == max(0, (11em - 2em) / 3); + W == max(0, 9em / 3); + W == max(0, 3em); + W == 3em; + + */ + + div div:nth-child(2) {color: pink;} + + div div:nth-child(3) {color: blue;} + ]]></style> + </head> + + <body> + + <div> + <div> + bl ac + bl ac + bl ac + bl ac + </div> + <div> + Pi nk + Pi nk + Pi nk + Pi nk + </div> + <div> + bl ue + bl ue + bl ue + bl ue + </div> + </div> + + </body> +</html> |