File: resize-multicol-with-fixed-size-children-003.html

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<!DOCTYPE html>
<title>Resize multicol with fixed-width child</title>
<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
<link rel="help" href="https://www.w3.org/TR/css-multicol-1/#columns">
<div id="multicol" style="position:relative; columns:2; column-fill:auto; gap:20px; width:220px; height:100px;">
  <div style="width:50px;">
    <div>
      <div>
        <div style="height:150px;"></div>
        <div id="target"></div>
      </div>
    </div>
  </div>
</div>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
  test(() => {
    document.body.offsetTop;

    // Increasing multicol width won't affect the layout of anything inside (the
    // child has a fixed width), except for the columns themselves, which will
    // become wider.
    multicol.style.width = "320px";

    // Check something in the second column.
    assert_equals(target.offsetLeft, 170);
    assert_equals(target.offsetTop, 50);
  }, "Resize multicol with fixed-width child");
</script>