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Test Info:
<!DOCTYPE html>
<html lang="en" class="reftest-wait">
<meta charset="utf-8">
<title>The green box shouldn't be invalidated when the blue box starts to move.</title>
<style>
body {
margin: 0;
}
#clip {
border: 1px solid black;
margin: 50px;
overflow: hidden;
height: 200px;
width: 400px;
position: relative;
}
#animatedTransform {
border: 1px solid blue;
width: 100px;
height: 100px;
position: absolute;
z-index: 1;
top: 50px;
left: 50px;
transition: transform ease-in-out 100s forwards;
}
#clip:hover > #animatedTransform,
#animatedTransform.animate {
transform: translateX(200px);
}
#aboveTransform {
position: relative;
margin: 50px 100px;
border: 1px solid lime;
width: 80px;
height: 80px;
z-index: 2;
}
</style>
<div id="clip">
<div id="animatedTransform"></div>
</div>
<div id="aboveTransform" class="reftest-no-paint"></div>
<script>
function doTest() {
document.getElementById("animatedTransform").className = "animate";
document.documentElement.removeAttribute("class");
}
document.addEventListener("MozReftestInvalidate", doTest);
</script>