TAILWIND CSS V4.0

Summary from the TLDR newsletter

Tailwind CSS v4.0 is now available. It has been optimized for performance and flexibility and has a reimagined configuration and customization experience that takes full advantage of the latest advancements the web platform has to offer. Tailwind CSS v4.0 features a new high-performance engine, a first-party Vite plugin, automatic content detection, built-in import support, new 3D transform utilities, and much more. This post discusses the new features - a comprehensive upgrade guide and an automated upgrade tool is available for existing projects.