<!DOCTYPE html>
<html>
<head>
<title>CSS Selectors: :nth-last-child() with no argument</title>
<link rel="help" href="https://crbug.com/355451192">
<link rel="help" href="https://drafts.csswg.org/selectors-4/#child-index">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
#target:nth-last-child() { color: red; }
#target { color: green; }
</style>
<head>
<body>
<body>
<div id="target">Test passes if this line is green.</div>
<script>
test(() => {
assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)');
});
</script>
</body>
</html>