Tailwind CSS 4 Guide 2026: What's New and How to Migrate
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Tailwind CSS 4 dropped earlier this year and it is easily the biggest
If you have been using Tailwind 3.x, you will notice differences right away. Some things are simpler now. A few things work differently. This guide covers what actually changed, what you need to updat
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What Changed in Tailwind CSS 4
The short version: almost everything under the hood is new, but your day-to-day utility classes mostly stay the same.
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How to Migrate from Tailwind 3 to 4
Here is the step-by-step process.
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New Features Worth Using
Group multiple variants to reduce repetition:
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Should You Upgrade Right Now?
If you are starting a new project, use Tailwind 4 without question. The CSS-first config, faster builds, and automatic content detection make it the clear choice.
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Related Guides
Using Tailwind 4 with a framework? Check out our React 19 best practices and Next.js deployment guide. If you are new to typed CSS, our TypeScript guide pairs well. And grab the right VS Code extensio
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Frequently Asked Questions
Does Tailwind 4 work with Next.js?
Yes. Next.js 14+ and 15+ both support Tailwind 4 out of the box. Just update your dependencies and PostCSS config.
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Keep Reading
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Read the Full Article
Complete guide to Tailwind CSS 4. Learn what changed, how to migrate from v3, and start using the new CSS-first config a