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Responsive Design — Mobile-First Patterns

Build responsive interfaces with mobile-first breakpoints, container queries, and responsive images.

13 min readresponsive, mobile-first, css, tailwind, web-dev

Responsive design isn't about making your desktop layout shrink. It's about designing for the smallest screen first and enhancing as space becomes available. This mental shift — mobile-first — produces better designs, simpler CSS, and faster mobile performance.

Over 60% of web traffic is mobile. If your app doesn't work on a phone, it doesn't work for most of your users.

Mobile-First With Tailwind

Tailwind's breakpoint prefixes work mobile-first by default. Unprefixed utilities apply to all screen sizes. Prefixed utilities (md:, lg:) apply at that breakpoint and above:

<div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
  {/* 1 column on mobile, 2 on tablet, 3 on desktop */}
</div>

This means you write the mobile layout first (no prefix),

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