🎨 Frontend Essentials

Give your markup meaning: the right <button>, <a>, and landmarks like <nav>, <main>, and <article> make pages readable to screen readers and search engines alike.

Master Flexbox, Grid, the box model, and specificity so your responsive layouts land exactly where you intend instead of fighting the cascade.

Tame the single-threaded event loop with closures, promises, and async/await, then wire up the DOM with efficient event delegation to build snappy, interactive pages.

Compose UIs from components driven by props and state, and learn how re-renders, stable keys, and effects work so React reconciles reliably instead of surprising you.

Know when state is local UI versus cached server data, kill prop drilling with context or a state library, and handle loading, error, and staleness with confidence.

Ship fast, inclusive experiences: track Core Web Vitals (LCP, CLS, INP), shrink bundles with code splitting, and nail alt text, keyboard access, and contrast.