Agent Skills: building-accessible-interfaces

Makes web and app UIs usable by keyboard, screen-reader, low-vision and motion-sensitive users — semantic HTML before ARIA, labelled controls, visible focus, WCAG AA contrast measured rather than eyeballed, touch targets, reduced motion, and automated axe checks plus a manual keyboard pass in CI or before every UI PR. Use when building or restyling a screen, adding a form, modal, menu or custom control, choosing colors, or reviewing a UI change.