Expand/Collapse Widget Demo

This is the first example of an expand/collapse widget. Click the header above to toggle the visibility of this content. The widget uses CSS transitions for smooth animations and JavaScript for interactivity.

You can include any type of content here, such as text, lists, images, or even other interactive elements.

Here are some key features:

• Smooth expand and collapse animations
• Click to toggle functionality
• Responsive design
• Customizable styling
• Accessible keyboard navigation (with additional JS)

This demonstrates how the widget can handle structured content like lists.

The expand/collapse widget is a common UI pattern used in web applications to save space and improve user experience. It allows users to reveal more information only when needed, reducing visual clutter on the page.

This implementation uses a simple JavaScript function to toggle a CSS class that controls the max-height property, creating a smooth sliding effect. The transition duration is set to 0.3 seconds for a natural feel.

For production use, you might want to add ARIA attributes for better accessibility and consider handling multiple open states or keyboard navigation.