An expand/collapse widget is a user interface component that allows users to show or hide content on demand. This helps keep interfaces clean and organized while still providing access to detailed information when needed.
These widgets are commonly used in FAQs, navigation menus, and content-heavy pages to improve user experience and reduce cognitive load.
The widget uses JavaScript to toggle CSS classes that control the visibility and height of the content container. When clicked, the button triggers a function that adds or removes the 'expanded' class.
CSS transitions provide smooth animations for the max-height property, creating a natural expanding and collapsing effect. The max-height changes from 0 to a large value when expanded.
The arrow icon rotates 180 degrees using CSS transforms to indicate the current state of the widget (expanded or collapsed).
Dimensions: Fully responsive, adapts to container width
Browser Support: All modern browsers (Chrome, Firefox, Safari, Edge)
Performance: Optimized with CSS transitions for 60fps animations
Accessibility: Keyboard navigable, screen reader friendly
The widget can be easily customized through CSS variables and style modifications. Colors, spacing, animation duration, and icon styles can all be adjusted to match your brand.
Simply click on any button to expand and reveal the hidden content. The arrow icon will rotate to indicate the expanded state.
Once expanded, you can read through all the information contained within the widget. The content area will smoothly animate open.
Click the button again to collapse the content and return to a compact view. This helps maintain a clean interface while browsing multiple sections.