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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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@@ -0,0 +1,119 @@
+<!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 multi-moz-columns and vertical margin (complex)</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/" /> <!-- 2013-08-14 -->
+ <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-002-ref.xht" />
+ <meta name="flags" content="ahem" />
+ <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'." />
+
+ <!--
+ More info:
+ Re: [css3-multicol] vertical margins rendering in nested multi-columns
+ http://lists.w3.org/Archives/Public/www-style/2013Aug/0146.html
+ -->
+
+<style type="text/css"><![CDATA[
+@font-face {
+ font-family: Ahem;
+ src: url("../../../fonts/Ahem.ttf");
+}
+]]></style>
+ <style type="text/css"><![CDATA[
+ body {margin: 0;}
+
+ body > div
+ {
+ background-color: yellow;
+ font: 1.25em/1 Ahem;
+ width: 41em;
+ /*
+ This test requires a viewport width of 820px
+ */
+ }
+
+ div
+ {
+ color: yellow;
+ font: inherit;
+ orphans: 1;
+ widows: 1;
+
+ -moz-column-count: 3;
+ -moz-column-gap: 1em;
+ }
+
+ div div {margin: 0em 1em;}
+
+ div div:last-child
+ {
+ color: blue;
+ margin: 1em;
+ }
+
+ /*
+
+ N == 3;
+
+ W == max(0, (available-width - ((N - 1) * -moz-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;
+
+ The height of column rule depends on number of line boxes in
+ each outer column box which depends on number of line boxes
+ in each inner column box. So:
+
+ 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) * -moz-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;
+
+ So, each duo of 'a', 'm' and 'x' should fill one and only 1
+ line box. There are 15 'a' duos and 15 'm' duos; therefore,
+ the 3 inner column boxes of each first 2 inner
+ multi-column elements should use 5 line boxes.
+
+ The 1st column box of last inner multi-column
+ (the blue one with 'x' duos) should have 'x1',
+ 'x2' and 'x3' duos filling 3 line boxes.
+
+ The 2nd column box of last inner multi-column should
+ have 'x4', 'x5' and 'x6' duos filling 3 line boxes.
+
+ The 3rd column box of the last inner multi-column should
+ have 'x7' and 'x8' duos filling 2 line boxes.
+ */
+
+ ]]></style>
+ </head>
+ <body>
+
+ <div>
+
+ <div> a1 a2 a3 a4 a5 a6 a7 a8 a9 a0 a1 a2 a3 a4 a5 </div>
+
+ <div> m1 m2 m3 m4 m5 m6 m7 m8 m9 m0 m1 m2 m3 m4 m5 </div>
+
+ <div> x1 x2 x3 x4 x5 x6 x7 x8 </div>
+
+ </div>
+
+ </body>
+</html>