<details name="starWars" open>
  <summary>Prequels</summary>
  <ul>
    <li>Episode I: The Phantom Menace</li>
    <li>Episode II: Attack of the Clones</li>
    <li>Episode III: Revenge of the Sith</li>
  </ul>
</details>

<details name="starWars">
  <summary>Originals</summary>
  <ul>
    <li>Episode IV: A New Hope</li>
    <li>Episode V: The Empire Strikes Back</li>
    <li>Episode VI: Return of the Jedi</li>
  </ul>
</details>

<details name="starWars">
  <summary>Sequels</summary>
  <ul>
    <li>Episode VII: The Force Awakens</li>
    <li>Episode VIII: The Last Jedi</li>
    <li>Episode IX: The Rise of Skywalker</li>
  </ul>
</details>