css/css-multicol/multicol-zero-height-001.xht

<!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: multi-column element with zero height</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/" /> <!-- 2013-08-24 -->
  <link rel="help" href="http://www.w3.org/TR/css3-multicol/#cw" title="3.1. 'column-width'" />
  <link rel="help" href="https://www.w3.org/TR/css-break-3/#breaking-rules" title="4. Rules for Breaking" />
  <link rel="match" href="multicol-zero-height-001-ref.xht" />
  <style type="text/css"><![CDATA[
  div#multi-column
  {
  height: 0;
  orphans: 1;
  widows: 1;
  width: 200px;
  border-bottom:1px solid red;

  column-count: 10;
  column-gap: 0;
  }

  div > div
  {
  background-color: lime;
  float: left;
  height: 10px;
  width: 100%;
  }
  ]]></style>
 </head>
 <body>
  <div id="multi-column">
    <div></div>
  </div>
 </body>
</html>