sticky-dialog.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-position/sticky-dialog.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>position:sticky computes to position:absolute</title>

<link rel="help" href="https://drafts.csswg.org/css-position-4/#top-styling">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<dialog style="position: sticky"></dialog>

<script>

test(() => {

  const dialog = document.querySelector('dialog');

  assert_equals(getComputedStyle(dialog).position, 'sticky');

  dialog.showModal();

  assert_equals(getComputedStyle(dialog).position, 'absolute');

}, 'Once in the top-layer position:sticky computes to position:absolute');

</script>