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<!DOCTYPE html>
<!-- Any copyright is dedicated to the Public Domain.
     http://creativecommons.org/publicdomain/zero/1.0/ -->
<html>
  <meta charset="utf-8">
  <title>Test for dynamic re-pagination of a nested float element with clearance</title>
  <link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
  <link rel="author" title="Mozilla" href="http://www.mozilla.org/">
  <link rel="help" href="https://drafts.csswg.org/css-break/#possible-breaks">
  <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1559961">
  <link rel="match" href="../reference/ref-filled-green-100px-square.xht">

  <style>
  #multicol {
    columns: 2;
    column-fill: auto;
    column-gap: 0;
    height: 400px; /* Must be large enough so that .target doesn't break initially. */
    width: 100px;
    background: red;
  }
  .block {
    width: 50px;
    background: green;
  }
  .target {
    float: left;
    height: 160px; /* Expected to be broken into 2 columns after runTest() */
  }
  </style>

  <script>
  function runTest() {
    document.body.offsetHeight;
    document.getElementById("multicol").style.height = "100px";
  }
  </script>

  <body onload="runTest()">
    <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
    <div id="multicol">
      <div>
        <div class="block" style="height: 40px"></div>
        <div class="block target"></div>
        <div style="clear: both"></div>
      </div>
    </div>
  </body>
</html>