css/css-multicol/inheritance.html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Inheritance of CSS Multi-column Layout properties</title>
<link rel="help" href="https://drafts.csswg.org/css-multicol/#property-index">
<meta name="assert" content="Properties should not inherit.">
<meta name="assert" content="Properties have initial values according to the spec.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/inheritance-testcommon.js"></script>
</head>
<body>
<div id="reference"></div>
<div id="container">
  <div id="target"></div>
</div>
<style>
  #reference {
    border-style: dotted; /* Avoid border-top-width computed style 0 */
    border-top-width: medium;
  }
  #container {
    color: rgba(42, 53, 64, 0.75);
    column-rule-style: dotted; /* Avoid column-rule-width computed style 0 */
  }
  #target {
    column-rule-style: dotted;
  }
</style>
<script>
const mediumWidth = getComputedStyle(reference).borderTopWidth; // e.g. 3px
reference.style.display = 'none';

assert_not_inherited('column-count', 'auto', '2');
assert_not_inherited('column-fill', 'balance', 'auto');
assert_not_inherited('column-rule-color', 'rgba(42, 53, 64, 0.75)', 'rgba(2, 3, 5, 0.5)');
assert_not_inherited('column-rule-style', 'none', 'dashed');
assert_not_inherited('column-rule-width', mediumWidth, '10px');
assert_not_inherited('column-span', 'none', 'all');
assert_not_inherited('column-width', 'auto', '10px');
</script>
</body>
</html>