<!doctype html>
<meta charset="utf-8">
<title>CSS Selectors Invalidation: :nth-child(... of :is)</title>
<link rel="author" title="Zach Hoffman" href="mailto:zach@zrhoffman.net">
<link rel="match" href="nth-child-of-class-ref.html">
<link rel="help" href="https://drafts.csswg.org/selectors-4/#child-index">
<style>
  p:nth-child(even of :is(.c)) {
    color: green;
  }
</style>
<div>
  <p>Ignored</p>
  <p>Ignored</p>
  <p class="c">Not ignored</p>
  <p class="c" id="toggler">Selectively 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("c");
</script>
