Summary
- Modern responsive layouts using container queries, fluid typography, CSS Grid, and mobile-first strategies.
- Container queries enable component-level responsiveness independent of viewport size, with support for container query units (cqi, cqw, cqh) and style queries Fluid typography and spacing via CSS clamp() scales smoothly across screen sizes with min/max bounds, eliminating discrete breakpoint jumps CSS Grid auto-fit/auto-fill patterns and Flexbox provide intrinsic layouts that adapt based on content; subgrid enables nested alignment Mobile-first media query approach with content-based breakpoints and feature queries (@supports) for progressive enhancement across browsers