Module 5: Design System + Accessibility + Performance
Polish your website to professional standards with a cohesive design system, WCAG accessibility compliance, and optimized performance. Achieve measurable excellence with ≥80 Lighthouse performance score and ≥90 accessibility rating.
Module Objectives
Design System Development
Create a cohesive design system with consistent typography, color palette, spacing scales, and reusable component patterns that give your site a polished, professional appearance.
WCAG Accessibility Compliance
Implement WCAG 2.1 guidelines to achieve ≥90 accessibility score: proper ARIA labels, keyboard navigation, color contrast, alt text, and semantic structure for inclusive design.
Performance Optimization
Optimize your website to achieve ≥80 Lighthouse performance score through image optimization, code minification, lazy loading, efficient CSS, and reducing render-blocking resources.
Quality Assurance Testing
Use Chrome DevTools Lighthouse, WAVE accessibility checker, and cross-browser testing to validate your site meets professional quality standards and works for all users.
Module Roadmap
Recommended Learning Path
Follow this sequence for optimal learning:
Each step builds upon the previous one, so following this order will give you the best learning experience.
Prerequisites
Before starting this module, make sure you have:
- Completion of Modules 1-4
- Functional website with secure data-gateway
- Understanding of CSS and responsive design
- Chrome DevTools familiarity
- Working knowledge of HTML semantics
Key Technologies
What You'll Learn
By the end of Module 5, your website will meet professional quality standards that employers expect. You'll have documented evidence of accessibility compliance and performance optimization, demonstrating attention to detail and commitment to inclusive, fast web experiences. Ready for advanced AI features in Module 6.