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<!DOCTYPE html>
<title>CSS Overflow Test: Originating element inertness not applied to ::scroll-marker</title>
<link rel="help" href="https://drafts.csswg.org/css-overflow-5/#scroll-markers">
<link rel="help" href="https://drafts.csswg.org/css-ui/#inertness">
<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/11746">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<style>
body { margin: 0; }
#scroller {
width: 100px;
height: 100px;
overflow-y: scroll;
scroll-marker-group: before;
}
#scroller::scroll-marker-group {
height: 100px;
}
.item {
height: 100px;
background-color: lime;
interactivity: inert;
}
.item::scroll-marker {
content: "X";
display: block;
width: 20px;
height: 20px;
}
#filler {
height: 400px;
}
</style>
<div id="scroller">
<div class="item"></div>
<div id="filler"></div>
<div id="target" class="item"></div>
</div>
<script>
promise_test(async t => {
await new test_driver.Actions()
.pointerMove(10, 30)
.pointerDown()
.pointerUp()
.send();
assert_equals(scroller.scrollTop, 500);
}, "::scroll-marker is not inert because its ::scroll-marker-group isn't");
</script>
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