<!-- Based on fast/repaint/box-sizing-padding-keeping-size.html -->
<!DOCTYPE HTML>
<script src="resources/paint-invalidation-test.js"></script>
<script>
function paintInvalidationTest()
{
    document.getElementById('target1').className = 'content-box';
    document.getElementById('target2').className = 'border-box';
}
window.onload = runPaintInvalidationTest;
</script>
<style>
body {
    margin: 0;
}
div {
    position: absolute;
    background-color: green;
}
.border-box {
    width: 100px;
    height: 100px;
    box-sizing: border-box;
}
.content-box {
    width: 60px;
    height: 60px;
    box-sizing: content-box;
    padding: 20px;
}
</style>
<div id="target1" class="border-box" style="top: 0px"></div>
<div id="target2" class="content-box" style="top: 200px"></div>