Expand/Collapse Widget Demo

This is a simple example of an expand/collapse widget. Click the button above to reveal or hide this content.

• Accessible: uses aria-expanded and aria-controls
• Content is wrapped in a container with the required "details" class
• Demonstrates a per-widget container structure

This region is visible on page load. It can be collapsed by clicking the button above.

By default, the content is shown and the button indicates that it can be collapsed.