UI/UX Best Practices Frontend Design Comprehensive UI/UX and frontend design best practices guide. Contains 42 rules across 8 categories, prioritized by impact to guide accessible, performant, and user-friendly interface development. When to Apply Reference these guidelines when: - Structuring HTML for accessibility and semantics - Writing CSS for responsive layouts and visual hierarchy - Optimizing images and fonts for Core Web Vitals - Designing forms with proper validation and error handling - Adding animations and interactive elements Rule Categories by Priority | Priority | Category | Im…