CSS – Beyond the Basics

This section covers medium to advanced CSS concepts relevant to real-world frontend development and interviews. Basic syntax, selectors, and properties are skipped.

What's Covered

• Specificity & Cascade – How the browser resolves conflicts, !important, layers
• Flexbox & Grid – Real layout patterns, gotchas, and when to use which
• Responsive Design – Media queries, container queries, fluid typography, clamp()
• Animations & Transitions – Keyframes, performance, will-change, GPU compositing
• Architecture & Patterns – BEM, CSS Modules, CSS-in-JS, utility-first, design tokens
• Performance – Critical CSS, paint optimization, layout thrashing, containment