A vertically stacked set of interactive headings that each reveal a section of content.
Usage
Use the native <details> and <summary> elements. Barley styles them automatically.
<details>
<summary>What is Barley?</summary>
<p>Barley is a UI library.</p>
</details>
<details open>
<summary>Is it open by default?</summary>
<p>Yes, if you add the `open` attribute.</p>
</details>