="vertical" class="overflow"></div>
<script>
  test(() => {
    const style = getComputedStyle(horizontal);
    assert_equals(style.overflowX, "visible");
    assert_equals(style.overflowY, "clip");
    assert_equals(style.overflowInline, "visible");
    assert_equals(style.overflowBlock, "clip");
  }, "overflow - horizontal writing mode");

  test(() => {
    const style = getComputedStyle(vertical);
    assert_equals(style.overflowX, "visible");
    assert_equals(style.overflowY, "clip");
    assert_equal