File: view-transition-name-stacking-context-dynamic.html

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<!DOCTYPE html>
<html class="reftest-wait">
<meta charset="utf-8">
<title>CSS will-change: 'will-change: view-transition-name' creates a stacking context dynamically</title>
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1962862">
<link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/#named-and-transitioning">
<link rel="match" href="/css/reference/ref-filled-green-100px-square-only.html">
<style>
div { width: 100px; height: 100px }
#wc { background: red; position: relative; }
#child { position: absolute; top: 0; left: 0; z-index: -1; background: green }
</style>
<p>Test passes if there is a filled green square.</p>
<div id="wc">
  <div id="child"></div>
</div>
<script>
window.addEventListener("TestRendered", function() {
  wc.style.viewTransitionName = "something";
  document.documentElement.removeAttribute("class");
});
</script>