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<!DOCTYPE html>
<script src="../../resources/run-after-layout-and-paint.js"></script>
<style>
#box, #box-unchanged {
margin-left: 300px;
width: 50px;
height: 50px;
}
#box {
margin-top: 150px;
background-color: green;
}
#box-unchanged {
background-color: blue;
}
#container {
width: 500px;
height: 500px;
overflow: scroll;
}
</style>
Tests invalidation and painting of a box changing background while composited scrolled.
<div id="container">
<div id="box"></div>
<div id="box-unchanged"></div>
<div style="height: 4000px"></div>
</div>
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