“HTML and CSS Mastery” is the definitive, project-driven guide to taking your front-end skills beyond the basics. You’ll move past “Hello, world!” into real-world workflows, structuring semantic markup for modern layouts, sculpting styles that adapt flawlessly to any screen, orchestrating advanced animations, building robust forms, and fine-tuning performance. Each concept is paired with hands-on examples and deep-dive notes so you emerge not just confident, but truly proficient. SHORT SUMMARY In this book, you’ll progress through ten chapters that layer core principles into sophisticated, production-ready techniques. You’ll start by revisiting HTML semantics and CSS fundamentals, then level up into Flexbox and Grid mastery, progressive enhancement, accessibility patterns, and advanced state-driven styling. Along the way, you’ll integrate JavaScript animation libraries, optimize delivery with HTTP/2 and critical CSS, implement CI-backed performance budgets, and monitor real-user metrics in production. By the final project, a live, high-performance marketing site, you’ll have a complete, polished codebase to share with employers or clients. INSIDE, YOU’LL DISCOVER: • Advanced HTML semantics: ARIA roles, focus management, and custom widgets • CSS architecture techniques: modular CSS, BEM conventions, and utility-first patterns • Layout mastery: complex Flexbox grids, responsive CSS Grid templates, and art-directed breakpoints • Progressive enhancement: offline-ready forms with service workers and Background Sync • Accessibility best practices: live regions, keyboard traps, and screen-reader–friendly patterns • Smooth, physics-based animations: CSS keyframes, GSAP timelines, and ScrollTrigger scroll-linked effects • Performance optimization: critical rendering path analysis, inlining critical CSS, and HTTP/2/3 preload & push strategies • Build-tool workflows: bundling, code-splitting, tree-shaking CSS with webpack, Rollup, and Vite • Testing & monitoring: Lighthouse and WebPageTest audits, CI performance budgets, RUM instrumentation with Datadog • Deployment at scale: fingerprinting, cache-busting, CDN configuration, and Netlify HTTP/3 headers THIS BOOK IS PERFECT FOR: • Intermediate front-end developers ready to bridge the gap between prototypes and production • Designers seeking to translate mockups into accessible, high-performance code • Self-taught coders who want a structured path through modern toolchains and best practices • Teams looking for a shared reference on advanced HTML, CSS, and performance strategies By the last page, you won’t just “know” HTML and CSS, you’ll have mastered the workflows, optimizations, and tooling that power today’s fastest, most accessible websites. Embark on this journey to front-end excellence and transform your code into craft.