<h2>Псевдокласс [:last-of-type]</h2>
<ul>
  <li>First</li>
  <li>Second</li>
  <li>Third</li>
  <ul>
    <li>First</li>
    <li>Second</li>
    <li>Third</li>
    <ul>
      <li>First</li>
      <li>Second</li>
      <li>Third</li>
    </ul>
  </ul>
</ul>
li:last-of-type {
  background-color: chocolate;
}

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