Introduction
Tailwind CSS v4 is the most important release of the framework. With a completely rewritten engine on native CSS and new utilities, it changes how you write styles.
Native CSS Engine
Tailwind v4 no longer needs PostCSS and autoprefixer. It uses native CSS with @layer, @property, and custom properties, reducing configuration and improving performance.
New Utilities
New utilities for container queries, scroll-driven animations, and variants like @starting-style for entry animations.
Unified Theme
The theme system is simplified with @theme in CSS. Define colors, fonts, and spacing directly in CSS without needing tailwind.config.js.
Improved Performance
The new engine generates only the CSS you use, eliminating the need for purging. Builds are up to 5 times faster than v3.
Migration from v3
Migration is mostly automatic with the upgrade tool. Some utility name changes require manual attention.
Conclusion
Tailwind CSS v4 is a leap forward in CSS-led design. At Vynta, we use it as the foundation for building modern and responsive interfaces.