Frontend Responsive

Responsive design adapts layouts to different screen sizes using media queries, flexbox, and grid. Apply mobile-first principles with relative units, fluid typography, and adaptive images to ensure consistent user experience across devices from phones to large monitors.

Media queries are CSS rules that apply styles based on screen size and device characteristics. Use them to define breakpoints for tablets and desktops, adjusting layouts, font sizes, and component behavior to match viewport dimensions and optimize readability.

Flexbox and grid are modern CSS layout tools that simplify responsive design. They enable fluid, flexible layouts that reflow automatically across viewports, reducing manual media query work and improving cross-device compatibility.

Test layouts on multiple browsers and devices, use standard CSS properties with vendor prefixes where needed, and validate against project style guides. Responsive design principles like relative units and media queries have broad cross-browser support.

Mobile-first builds base styles for small screens, then uses media queries to enhance layouts for larger viewports. This approach prioritizes performance and usability on phones, progressively enriching experience for tablets and desktops.

Container queries allow components to respond to their container width rather than viewport size, offering more flexible, reusable designs. They complement media queries and improve component-level responsive behavior across different layout contexts.