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<!DOCTYPE html>
<html reftest-async-scroll>
<!-- In this test, the div |fixed| is fixed with respect to the
page's root scroll frame, but there's also a subframe |scrollbox|
which is async-scrolled and which generates a container layer
(because of the opacity), so that its async transform is on an
ancestor layer of |fixed|'s layer. We are testing that this
async transform is correctly unapplied to keep |fixed| fixed. -->
<style>
body {
height: 10000px;
}
.outer-opacity {
opacity: 0.8;
}
.scrollbox {
border: 1px solid black;
width: 200px;
height: 400px;
overflow: scroll;
scrollbar-width: none;
}
.inner-opacity {
height: 1000px;
opacity: 0.8;
}
.fixed {
background: blue;
width: 100px;
height: 100px;
position: fixed;
}
</style>
<div class="outer-opacity">
<div class="scrollbox"
reftest-displayport-x="0" reftest-displayport-y="0"
reftest-displayport-w="200" reftest-displayport-h="1000"
reftest-async-scroll-x="0" reftest-async-scroll-y="50">
<div class="inner-opacity">
<div class="fixed"></div>
</div>
</div>
</div>
</html>
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