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Test Info: Warnings

<!DOCTYPE html>
<html reftest-async-scroll
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="300">
<style>
html {
scrollbar-width: none;
}
body {
height: 4000px;
margin: 0;
}
#sticky {
position: sticky;
top: 0;
height: 60px;
background-color: blue;
}
#fixed {
position: fixed;
top: 0;
left: 0;
width: 100px;
height: 100px;
}
</style>
<body>
<div style="height: 200px;"></div>
<div id="sticky">
<div id="fixed"></div>
</div>
</body></html>