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UI/UX Design28 Ene, 2026Peter Lima15 min read

Modern Responsive Design

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Modern Responsive Design

Responsive design is no longer optional. With over 60% of web traffic coming from mobile devices, your site must look perfect on any screen.

Prerequisites

  • Knowledge of HTML and CSS
  • Code editor configured
  • Browser with developer tools
  • Basic knowledge of Flexbox and Grid

Mobile-First approach

The mobile-first approach means designing for small screens first and then expanding for larger screens. This results in cleaner CSS and better mobile performance.

Pro Tip

Always start with the mobile design. It's easier to add complexity for large screens than to simplify a complex design for mobile.

Breakpoints and Media Queries

Breakpoints define at which points your design changes layout. Use content-based breakpoints, not device-specific ones, for a truly responsive design.

  • 640px (sm): Phones in landscape
  • 768px (md): Tablets in portrait
  • 1024px (lg): Tablets in landscape and laptops
  • 1280px (xl): Desktops
  • 1536px (2xl): Large screens

Conclusion

Responsive design is a fundamental skill for every web developer. Mastering mobile-first and breakpoints will allow you to create experiences that work perfectly on any device.

THE AUTHOR

Peter Lima

Peter is a full stack web developer with over 5 years of experience creating digital solutions. Specialist in React, Next.js and Node.js, passionate about sharing knowledge and helping other developers grow professionally.

More from Peter Lima

Comments

Isabel Luna

January 22, 2026

Very clear and practical. The mobile-first approach changed my way of designing.

Andres Vega

January 19, 2026

Good fundamentals. I'd like to see more about responsive CSS Grid.

Monica Espinoza

January 16, 2026

Excellent introductory tutorial to responsive design!