Expandable / Collapsible Widget Demo

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Benefits of this widget include accessible toggling, smooth animation, and clear labeling for assistive technologies.

• Keyboard accessible with a visible label
• Animated expand/collapse
• Uses semantic ARIA attributes

The widget is built with a button that toggles visibility of a content container. The container uses the class “details” and toggles the “open” state to animate its height.

1. Click the header to expand
2. The details panel grows to show content
3. Click again to collapse just the panel

Yes. You can customize labels, content, and animation timing. This example shows three independent widgets that each wrap their controlled content in a div with the class “details” and their trigger button in a container with the class “example”.

Example content can include text, lists, or code blocks.

/* Example CSS snippet (not required for functionality) */
.details { max-height: 600px; }