Expand / Collapse Widget Examples

This is an example of an expandable region. It uses a button with aria-expanded and aria-controls to indicate and manage state.

• Animated open/close with max-height
• Accessible labeling via aria attributes
• Graceful fallback for reduced-motion preferences

Longer content will animate smoothly to its natural height. The script measures the scrollHeight and applies an appropriate max-height during transitions.

Example uses include:

• Progressive disclosure of advanced settings
• Lightweight accordion patterns
• Help / FAQ screens

Tip: To make content more dynamic, you can inject elements inside the .details .inner container; the open/close logic will still work after toggling.