Tailwind CSS v4 Migration Guide: Everything That Changed in 2026

Tailwind CSS v4 ditched tailwind.config.js entirely. Configuration is now CSS-first via @theme. The color system, variants, and plugin API all changed. This migration guide covers every breaking change with before/after code.

Continue reading the full article on WowHow →

Originally published at https://wowhow.cloud/blogs/tailwind-css-v4-migration-guide-new-features-2026

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