How to make video and audio content accessible with captions, transcripts, audio descriptions, and proper player controls.

Building accessible modal dialogs with proper focus trapping, keyboard support, and screen reader announcements using the dialog element.

Building accessible nav structures with skip links, breadcrumbs, mega menus, and proper aria-current usage for screen readers.

Making data tables accessible with proper headers, scope, captions, and responsive patterns for screen reader users.

Building tooltips and popovers that work with keyboard navigation, screen readers, and touch devices using ARIA and the Popover API.

Understanding WAI-ARIA roles, states, properties, and live regions for making custom widgets and dynamic content accessible.