Tailwind CSS version 4 has officially been open-sourced, bringing with it a range of exciting features and improvements. The new version includes a faster engine built for speed, making development even more efficient. It also introduces composable variants, modern CSS features, and a unified toolchain for CSS processing. One of the key changes in v4 is the shift towards a CSS-first configuration approach, using CSS variables instead of a JavaScript configuration file.
With Tailwind CSS v4, installation and customization have been simplified. The new version offers zero-configuration content detection and eliminates the need for additional tools like Autoprefixer or PostCSS Import. This means developers can start using Tailwind CSS v4 right away without any hassle.
The road to Tailwind CSS v4 includes some exciting updates yet to come. This includes support for JavaScript configuration files, additional dark modes, plugins and custom utilities, and prefix support. The alpha version of Tailwind CSS v4 is now available for testing and experimentation. You can try it out using Vite, PostCSS, or the CLI.
Tailwind CSS has always been a popular choice for developers due to its power and flexibility. With the introduction of Tailwind CSS v4, developers can expect an even faster and simplified experience, allowing them to build amazing websites and applications with ease.

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Tailwind CSS V4 is now open-sourced and brings a faster engine, composable variants, modern CSS features, and simplified installation and customization. Future updates will include support for JavaScript configuration files, additional dark modes, plugins and custom utilities, and prefix support.

Tailwind CSS v4 Alpha: Open-Sourcing Big Changes for Speed and Simplicity

very excited for this. love me some tailwind.