wpt/css/selectors/nth-child-of-compound-selector.html at master · web-platform-tests/wpt · GitHub

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<!doctype html>
<html>
<head>
<title>:nth-child with compound selector argument</title>
<link rel="help" href="https://un5n798jx6qx6j0rmf2verhh.julianrbryant.com/selectors-4/#child-index">
<link rel="match" href="nth-child-of-compound-selector-ref.html">
<style>
/* 3n of paragraph with the class foobar but for which foobar is not the only class. */
p:nth-child(3n+1 of p.foobar:not([class=foobar])) {
    background-color: lime;
}
</style>
</head>
<body>
    <p class="foobar foo"></p>
    <p>This test the styling of paragraphs with :nth-child(An+B of selector). If the test succeed, paragraphs that say "green" should have a green background.</p>
    <p class="foobar">White!</p>
    <p class="foobar foo">White!</p>
    <p>White!</p>
    <p class="foo foobar">White!</p>
    <p>White!</p>
    <p class="foobar foo">Green</p>
    <p class="foobar">White!</p>
    <p class="foo foobar">White!</p>
    <p class="foobar">White!</p>
    <p class="foo foobar baz">White!</p>
    <p>White!</p>
</body>
</html>