Expand / Collapse widget examples

This is additional content that can be shown or hidden. It demonstrates an accessible expand/collapse widget using a button that controls the container below.

Keyboard: focus the button and press Space or Enter to toggle. Press Escape while focus is inside the content to close.

• Accessible attributes: aria-expanded, aria-controls, aria-hidden, role="region"
• Smooth height animation handled by JavaScript

First name:

Last name:

The form is part of the collapsible region and remains interactive while visible.