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Test Info:
<!DOCTYPE html>
<html class="reftest-wait">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <style type="text/css">
    .container {
        transform-style: preserve-3d;
        perspective: 1000px;
        width: 500px;
        background-color: white;
    }
    .child {
        width: 500px;
        height: 500px;
        background-color: blue;
        transform: translateY(0px);
        mix-blend-mode: difference;
    }
    </style>
</head>
<body>
    <div class="container">
        <div class="child"></div>
    </div>
    <script type="text/javascript">
    function doTest() {
        document.querySelector(".child").style["background-color"] = "red";
        document.documentElement.className = "";
    }
    window.addEventListener("MozReftestInvalidate", doTest);
    // setTimeout(doTest, 5000);
    </script>
</body>
</html>