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<!DOCTYPE html>
<meta charset="UTF-8">
<link rel="author" title="Xidorn Quan" href="mailto:me@upsuper.org">
<link rel="author" title="Mozilla" href="https://www.mozilla.org">
<link rel="help" href="https://drafts.csswg.org/css-scrollbars-1/#scrollbar-width">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
.area {
width: 100px;
height: 100px;
overflow: auto;
display: inline-block;
}
.area::before {
content: "";
display: block;
width: 200px;
height: 200px;
}
</style>
<div id="scrollbar-none" class="area" style="scrollbar-width: none"></div>
<div id="scrollbar-thin" class="area" style="scrollbar-width: thin"></div>
<div id="scrollbar-auto" class="area" style="scrollbar-width: auto"></div>
<script>
test(function() {
let elem = document.getElementById("scrollbar-none");
assert_equals(elem.clientWidth, 100);
assert_equals(elem.clientHeight, 100);
}, "scrollbar-width: none should have no scrollbar");
test(function() {
let thin = document.getElementById("scrollbar-thin");
let auto = document.getElementById("scrollbar-auto");
assert_greater_than_equal(thin.clientWidth, auto.clientWidth);
assert_greater_than_equal(thin.clientHeight, auto.clientHeight);
}, "scrollbar-width: thin should have scrollbar no wider than auto");
</script>
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