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Test Info: Warnings

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Overflow: elementFromPoint for ::scroll-button is scroller</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
body {
margin: 0;
}
#scroller {
margin-top: 100px;
width: 600px;
height: 300px;
overflow: auto;
white-space: nowrap;
}
#scroller div {
display: inline-block;
width: 600px;
height: 200px;
}
#scroller::scroll-button(left) {
position: absolute;
top: 0;
left: 0;
content: "";
width: 100px;
height: 20px;
display: inline-block;
}
</style>
<div id="scroller">
<div></div>
<div></div>
</div>
<script>
test(() => {
assert_equals(document.elementFromPoint(10, 10), scroller);
});
</script>