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- <!DOCTYPE html>
- <html class="reftest-wait">
- <title>
- Changing keyframes to opacity frames creates a stacking context even if the
- animation is delay phase
- </title>
- <style>
- span {
- height: 100px;
- width: 100px;
- position: fixed;
- background: green;
- top: 50px;
- }
- #test {
- width: 100px; height: 100px;
- background: blue;
- }
- </style>
- <span></span>
- <div id="test"></div>
- <script>
- var anim = document.getElementById("test")
- .animate({ width: ['100px', '100px'] },
- { delay: 100000, duration: 100000 });
- anim.ready.then(function() {
- anim.effect.setKeyframes({ opacity: [0, 1] });
- requestAnimationFrame(function() {
- document.documentElement.classList.remove("reftest-wait");
- });
- });
- </script>
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