tailwind.config.js How to write ？

[triggergun]

I searched for a long time but couldn't find the official document.

[wongjn]

If you are using Tailwind v4, you shouldn't need a tailwind.config.js file. Configuration is done in CSS.

[rozsazoltan]

Related:

• What's breaking changes from v4?
• Automatic Source Detection from TailwindCSS v4
• New CSS-first configuration option in v4
• Which TailwindCSS v4 namespace matches a given TailwindCSS v3's theme keys? #19020