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<!DOCTYPE html>
<link rel=author href="mailto:jarhar@chromium.org">
<link rel=help href="https://html.spec.whatwg.org/multipage/interactive-elements.html#the-dialog-element">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
test(() => {
const dialog = document.createElement('dialog');
document.body.appendChild(dialog);
dialog.style = 'position:static';
assert_equals(getComputedStyle(dialog).position, 'static');
dialog.showModal();
assert_true(dialog.open);
assert_equals(getComputedStyle(dialog).position, 'absolute',
`dialog should be position:absolute when element.style has position:static.`);
dialog.close();
assert_false(dialog.open);
dialog.style = 'position:relative';
assert_equals(getComputedStyle(dialog).position, 'relative');
dialog.showModal();
assert_true(dialog.open);
assert_equals(getComputedStyle(dialog).position, 'absolute',
`dialog should be position:absolute when element.style has position:relative.`);
dialog.close();
assert_false(dialog.open);
}, `Verifies that position:static and position:relative computed to position:absolute in the top layer.`);
</script>
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