An expand/collapse widget, often called an accordion or disclosure widget, allows users to toggle the visibility of content sections. This helps in managing screen real estate and reducing cognitive load.
Yes. This implementation uses proper ARIA attributes: aria-expanded on the button to indicate state and aria-controls to link the button to the content.
Absolutely. We are using a CSS Grid trick (grid-template-rows transitioning from 0fr to 1fr) to animate to height: auto smoothly without JavaScript height calculations.