Web Accessibility (A11Y)

WCAG 2.1 AA compliance guidelines and implementation patterns.

WCAG Principles (POUR)

1. Perceivable - Information must be presentable in ways users can perceive
2. Operable - Interface must be operable by all users
3. Understandable - Information and operation must be understandable
4. Robust - Content must be robust enough for assistive technologies

Semantic HTML

Use Correct Elements