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Test Info: Warnings

<!DOCTYPE HTML>
<html reftest-async-scroll>
<body>
<div style="width:400px; height:500px; overflow:scroll; scrollbar-width: none; border:2px solid black"
reftest-displayport-x="0" reftest-displayport-y="0"
reftest-displayport-w="800" reftest-displayport-h="2000"
reftest-async-scroll-x="0" reftest-async-scroll-y="50">
<div style="height:500px"></div>
<div style="height:100px; width:200px; float:left; background:purple"></div>
<div style="opacity:0.5">
<div style="left:200px; top:0; height:800px; width:300px; float:left; background:yellow; position:absolute; z-index:1;"></div>
<div style="height:100px; width:200px; float:left; background:purple; position:relative; z-index:2;"></div>
</div>
</div>