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<!DOCTYPE html>
<html class="reftest-wait">
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<style type="text/css">
#parent {
width: 400px;
height: 400px;
transform-style: flat;
}
#child {
width: 400px;
height: 400px;
overflow: scroll;
}
.box {
width: 400px;
height: 300px;
background-color: red;
}
</style>
</head>
<body>
<div id="parent">
<div id="child">
<div class="box"></div>
<div class="box"></div>
</div>
</div>
<script>
function doTest() {
document.documentElement.removeAttribute("class");
document.getElementById("child").scrollTop = 200;
}
window.addEventListener("MozReftestInvalidate", doTest);
</script>
</body>
</html>