Making websites look great on any screen size -- phones, tablets, and desktops.
Responsive design is an approach to web design where your site automatically adapts to look great on any screen size -- from a small phone to a large desktop monitor. This is done using CSS techniques like media queries, flexbox, grid, and CSS containers.
In 2026, over 60% of web traffic comes from mobile devices, making responsive design a non-negotiable Frontend skill. Modern CSS frameworks like Tailwind CSS make responsive design much easier with breakpoint prefixes. Responsive layouts affect how browsers render pages across devices.
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