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<!doctype html>
<html class="reftest-wait">
<head>
<meta charset=utf-8>
<title>The effect value of consecutive animations targeting 'opacity' in a shadow root</title>
<link rel="help" href="https://drafts.csswg.org/web-animations/">
<link rel="match" href="effect-value-opacity-replaced-effect-in-shadow-root-ref.html">
</head>
<body>
<custom-element></custom-element>
<script>
'use strict';
(async function () {
const customElement = document.querySelector('custom-element');
const shadowRoot = customElement.attachShadow({ mode: 'open' });
shadowRoot.innerHTML = `<div style="width: 100px; height: 100px; background-color: green"></div>`;
const target = shadowRoot.firstElementChild;
await target.animate({ opacity: [1, 0] }, { duration: 10, fill: 'both' }).finished;
await target.animate({ opacity: [0, 1] }, { duration: 10, fill: 'both' }).finished;
document.documentElement.classList.remove("reftest-wait");
})();
</script>
</body>
</html>
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