fixed-position-child-with-will-change-ancestor.tentative.html

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This WPT test may be referenced by the following Test IDs:
- /html/semantics/interactive-elements/the-dialog-element/fixed-position-child-with-will-change-ancestor.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

<title>Test that a fixed positioned child of a dialog is aligned to the viewport</title>

<head>

<link rel="match" href="fixed-position-child-with-fixed-position-cb-ref.html">

<link rel="help" href="https://fullscreen.spec.whatwg.org/#new-stacking-layer">

<style>

::backdrop {

    display: none;

#dialog {

    outline: none;

</style>

</head>

<body>

<div style="will-change: transform">

    <dialog id="dialog">

        Dialog should be centered.

        <div style="position: fixed; top: 0px; left: 0px">This fixed positioned element is aligned to viewport top-left.</div>

    </dialog>

</div>

<script>

dialog.showModal();

</script>

</body>

</html>