nIframeSpan).color, "rgb(0, 0, 0)");
    assert_equals(getComputedStyle(redIframeSpan).color, "rgb(255, 0, 0)");
    assert_equals(getComputedStyle(blueIframeSpan).color, "rgb(0, 0, 0)");
    assert_equals(getComputedStyle(whiteIframeSpan).color, "rgb(255, 0, 0)");
    assert_equals(getComputedStyle(yellowIframeSpan).color, "rgb(0, 0, 0)");
  });
}, 'Stylesheet constructed on iframe cannot be used in the main Document');
</script>

<div id="divNonConstructed" class="nonConstructed">
</div>

<script>
`use st