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Tailwind CSS v4 Migration Guide: CSS-First Configuration and Design Token Architecture
Yash Kumar Singh• 10 min read•July 20, 2026
💡 ARTICLE EXECUTIVE SUMMARY: "Tailwind CSS v4 eliminates tailwind.config.js in favor of native CSS @theme directives. Learn how to architect clean design tokens with container queries."
1. The CSS-First Configuration Revolution
Tailwind CSS v4 moves theme customization directly into CSS files using the @theme directive, enabling native CSS variable inspection, better build performance, and dynamic container query support.
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