testing/web-platform/tests/html/rendering/the-details-element/details-pseudo-elements-001-ref.html


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<!DOCTYPE HTML>
<title>Details pseudo-elements</title>
<!-- This test is (at time of writing) _EXTREMELY_ tentative. -->
<style>

div { background: aqua }

</style>

<details open>
  <summary>The summary</summary>
  <div>The details!</div>
</details>