Introduction

Responsive design ensures websites look good on all devices.
This Diffcozen guide explains modern techniques.

Techniques

• Flexbox & Grid layouts
• Mobile-first approach
• Media queries for dynamic breakpoints
• CSS clamp() for scalable typography

Best Practices

• Test on multiple devices
• Optimize images and assets
• Avoid fixed-width elements

Conclusion

Modern responsive design improves usability and engagement.
Frontend developers must master these techniques in 2026.