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- <!DOCTYPE html>
- <html class="reftest-wait reftest-no-flush">
- <title>
- Opacity animation creates a stacking context when changing its target
- </title>
- <style>
- span {
- height: 100px;
- width: 100px;
- position: fixed;
- background: green;
- top: 50px;
- }
- div {
- width: 100px; height: 100px;
- background: blue;
- }
- </style>
- <span></span>
- <div id="test"></div>
- <div id="another"></div>
- <script>
- var anim = document.getElementById("test")
- .animate({ opacity: [1, 1] }, { duration: 100000 });
- anim.ready.then(function() {
- anim.effect.target = document.getElementById("another");
- requestAnimationFrame(function() {
- document.documentElement.classList.remove("reftest-wait");
- });
- });
- </script>
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