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122 lines
No EOL
3.5 KiB
HTML
122 lines
No EOL
3.5 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>CSS Multi-column Layout Test: nested multicolumns and vertical margin (complex)</title>
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<style type="text/css">
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@page { font: italic 8pt sans-serif; color: gray;
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margin: 7%;
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counter-increment: page;
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@top-left { content: "CSS Multi-column Layout Module Level 1 CR Test Suite"; }
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@top-right { content: "Test multicol-nested-margin-002"; }
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@bottom-right { content: counter(page); }
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}
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</style>
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<link rel="author" title="Opera Software ASA" href="http://www.opera.com/" />
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<link rel="reviewer" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> <!-- 2013-08-14 -->
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<link rel="help" href="http://www.w3.org/TR/css3-multicol/#the-multi-column-model" title="2. The multi-column model" />
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<link rel="match" href="reference/multicol-nested-margin-002-ref.xht" />
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<meta name="flags" content="ahem" />
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<meta name="assert" content="This test checks that when an inner nested multi-column element is preceded by a soft column break (caused by an unforced column-break), then the used margin-top of such inner nested multi-column element is '0'." />
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<!--
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More info:
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Re: [css3-multicol] vertical margins rendering in nested multi-columns
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http://lists.w3.org/Archives/Public/www-style/2013Aug/0146.html
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-->
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<style type="text/css"><![CDATA[
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body {margin: 0;}
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body > div
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{
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background-color: yellow;
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font: 1.25em/1 Ahem;
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width: 41em;
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/*
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This test requires a viewport width of 820px
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*/
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}
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div
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{
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color: yellow;
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font: inherit;
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orphans: 1;
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widows: 1;
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column-count: 3;
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column-gap: 1em;
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}
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div div {margin: 0em 1em;}
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div div:last-child
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{
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color: blue;
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margin: 1em;
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}
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/*
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N == 3;
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W == max(0, (available-width - ((N - 1) * column-gap)) / N);
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W == max(0, (41em - ((3 - 1) * 1em)) / 3);
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W == max(0, (41em - (2 * 1em)) / 3);
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W == max(0, (41em - 2em) / 3);
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W == max(0, 39em / 3);
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W == max(0, 13em);
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W == 13em;
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The height of column rule depends on number of line boxes in
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each outer column box which depends on number of line boxes
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in each inner column box. So:
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13em : width of each outer column box
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-
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2em : horizontal margin of each div inside
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=======
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11em : width of each inner multi-column elements
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N == 3;
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W == max(0, (available-width - ((N - 1) * column-gap)) / N);
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W == max(0, (11em - ((3 - 1) * 1em)) / 3);
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W == max(0, (11em - (2 * 1em)) / 3);
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W == max(0, (11em - 2em) / 3);
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W == max(0, 9em / 3);
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W == max(0, 3em);
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W == 3em;
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So, each duo of 'a', 'm' and 'x' should fill one and only 1
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line box. There are 15 'a' duos and 15 'm' duos; therefore,
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the 3 inner column boxes of each first 2 inner
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multi-column elements should use 5 line boxes.
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The 1st column box of last inner multi-column
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(the blue one with 'x' duos) should have 'x1',
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'x2' and 'x3' duos filling 3 line boxes.
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The 2nd column box of last inner multi-column should
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have 'x4', 'x5' and 'x6' duos filling 3 line boxes.
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The 3rd column box of the last inner multi-column should
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have 'x7' and 'x8' duos filling 2 line boxes.
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*/
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]]></style>
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</head>
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<body>
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<div>
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<div> a1 a2 a3 a4 a5 a6 a7 a8 a9 a0 a1 a2 a3 a4 a5 </div>
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<div> m1 m2 m3 m4 m5 m6 m7 m8 m9 m0 m1 m2 m3 m4 m5 </div>
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<div> x1 x2 x3 x4 x5 x6 x7 x8 </div>
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</div>
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</body>
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</html> |