About eight months ago we open-sourced our progress on Tailwind CSS v4.0. Hundreds of hours of fixing bugs, soul-crushing backward compatibility work, and troubleshooting Windows CI failures later, I'm excited to finally tag the first public beta release.
As I talked about when we published the first alpha, Tailwind CSS v4.0 is an all-new engine built for performance, and designed for the modern web.
- Built for performance — full builds in the new engine are up to 5x faster, and incremental builds are over 100x faster — and measured in microseconds.
- Unified toolchain — built-in import handling, vendor prefixing, and syntax transforms, with no additional tooling required.
- CSS-first configuration — a reimagined developer experience where you customize and extend the framework directly in CSS instead of a JavaScript configuration file.
- Designed for the modern web — built on native cascade layers, wide-gamut colors, and including first-class support for modern CSS features like container queries,
@starting-style, popovers, and more.
There's so much more to say, but everything you need to get started is in the new beta documentation we published today:
Get started with Tailwind CSS v4.0 Beta 1 →
Start building and help us bullet-proof this thing for the stable release early in the new year.