An expand/collapse widget, also known as a disclosure widget or accordion, allows users to toggle the visibility of content. This helps in managing screen real estate by hiding information until it is needed.
Yes. This implementation uses proper ARIA attributes. The button has aria-expanded to indicate state and aria-controls to link it to the content div. This ensures screen readers can understand the relationship and current state.
Absolutely. The CSS is separated into structural styles and visual styles. You can change the colors, padding, borders, and animations in the <style> block to match your design system.