ffsetWidth, "thin clientWidth");
      assert_equals(container.offsetLeft, content.offsetLeft, "thin offsetLeft");
      assert_equals(container.clientWidth, content.clientWidth, "thin clientWidth");
      assert_not_equals(container.offsetWidth, content.offsetWidth, "thin offsetWidth");
    }, "scrollbar-width thin overrides ::-webkit-scrollbar");

    done();
  }
</script>

<body onload="performTest()">

  Test scrollbar-width: vertical scrollbar

  <div class="container auto" id="container_auto">
    <di