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<!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: multicolumn and margin-bottom collapsing</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/" /> <!-- 2013-08-11 -->
  <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-002-ref.xht" />
  <meta name="assert" content="This test checks that a block container element's margin-bottom can collapse with its multi-column parent's margin-bottom if no line boxes, no clearance, no padding and no border separate them." />
  <meta name="flags" content="ahem" />
<style type="text/css"><![CDATA[
@font-face {
  font-family: Ahem;
  src: url("../../../fonts/Ahem.ttf");
}
]]></style>
  <style type="text/css"><![CDATA[
  body {margin: 0em;}

  body > div
  {
  font: 1.25em/1 Ahem;
  width: 32em;

  -moz-column-gap: 1em;
  -moz-column-width: 8em;
  }

  /*

  N == max(1, floor((available-width + -moz-column-gap) / (-moz-column-width + -moz-column-gap)));
  N == max(1, floor((32em + 1em) / (8em + 1em)));
  N == max(1, floor(33em / 9em));
  N == max(1, floor(3.6));
  N == max(1, 3);
  N == 3;

  W == ((available-width + -moz-column-gap) / N) - -moz-column-gap;
  W == ((32em + 1em) / 3) - 1em;
  W == (33em / 3) - 1em;
  W == (11em) - 1em;
  W == 10em;

  */

  div
  {
  background: yellow;
  color: black;
  orphans: 1;
  widows: 1;
  }

  div > div {margin: 0 1em 1em;}

  div + div {color: blue;}

  div + div + div {color: pink;}
  ]]></style>
 </head>

 <body>

  <div>
	<div>
		bl ac
		bl ac
		bl ac
		bl ac
	</div>
	<div>
		bl ue
		bl ue
		bl ue
		bl ue
	</div>
	<div>
		Pi nk
		Pi nk
		Pi nk
		Pi nk
	</div>
  </div>

 </body>
</html>