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Test Info: Warnings

<!doctype html>
<meta charset="utf-8">
<title>CSS Overflow: scrollbar-gutter on the root, overflow:scroll on the body</title>
<link rel="author" title="Felipe Erias Morandeira" href="mailto:felipeerias@igalia.com" />
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/parsing-testcommon.js"></script>
<style>
body,
html {
margin: 0;
padding: 0;
border: none;
}
:root {
scrollbar-gutter: stable;
}
body {
overflow: scroll;
}
#content {
background: green;
width: 100%;
height: 100px;
}
</style>
<body>
<div id="content"></div>
<script type="text/javascript">
setup({ explicit_done: true });
test(function () {
let root = document.documentElement;
let body = document.body;
let content = document.getElementById('content');
assert_less_than(root.clientWidth, window.outerWidth, "viewport has scrollbars");
assert_equals(body.offsetWidth, root.clientWidth, "body matches root");
assert_equals(body.clientWidth, body.offsetWidth, "body has no gutter");
assert_equals(content.offsetWidth, body.clientWidth, "content matches body");
}, "viewport has fixed scrollbars");
done();
</script>
</body>