Set your Publisher ID in src/config/ads.ts to display live ads.
Web Accessibility Summary & Certification Exam
Earn your official Web Accessibility Specialist (a11y) Certificate
Validate your knowledge of WCAG POUR principles, semantic HTML landmarks, alt text guidelines, color contrast, keyboard focus, and ARIA attributes.
Key Competencies Tested
WCAG POUR principles (Perceivable, Operable, Understandable, Robust).
Semantic HTML benefits and landmark navigation.
Informative alt text vs decorative empty alt="".
4.5:1 AA contrast ratios and not relying on color alone.
The First Rule of ARIA, aria-live regions, and aria-describedby form validation.
Set your Publisher ID in src/config/ads.ts to display live ads.
Test Yourself With Exercise
Which CSS selector styles the focus outline specifically when navigating with a keyboard, avoiding unsightly focus rings on mouse clicks?