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chromium/third_party/blink/web_tests/external/wpt/css/selectors/nth-child-of-nesting.html 

<!doctype html>
<html>
<head>
<title>:nth-last-child nesting</title>
<link rel="help" href="https://drafts.csswg.org/selectors-4/#child-index">
<link rel=author href="mailto:[email protected]" title="Zach Hoffman">
<link rel="match" href="nth-child-of-nesting-ref.html">
<style>
:nth-child(2n + 1 of :nth-child(n of .target)) {
    background-color: lime;
}
</style>
</head>
<body>
    <p>White</p>
    <p class="target">Green</p>
    <p>White</p>
    <p class="target">White</p>
    <p>White</p>
    <p class="target">Green</p>
    <p>White</p>
    <p class="target">White</p>
    <p>White</p>
    <p class="target">Green</p>
    <p>White</p>
    <p class="target">White</p>
</body>
</html>