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<!DOCTYPE html>
<meta charset="utf-8" />
<title>CSS Selectors Invalidation: :nth-child(... of class) when ancestor changes</title>
<link rel="author" title="Steinar H. Gunderson" href="sesse@chromium.org">
<link rel="match" href="nth-child-when-ancestor-changes-ref.html">
<link rel="help" href="https://drafts.csswg.org/selectors-4/#child-index">
<style>
.ancestor :nth-child(even of .c) {
color: green;
}
</style>
<div id="toggler">
<p>Ignored</p>
<p class="c">Not ignored</p>
<p class="c">Not ignored</p>
<p class="c">Not ignored</p>
<p class="c">Not ignored</p>
<p>Ignored</p>
</div>
<script>
document.documentElement.offsetTop;
toggler.classList.toggle("ancestor");
</script>
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