Tailwind CSS Migration Project with Astro

This project demonstrates the migration process from Tailwind CSS 3.14.7 to Tailwind CSS 4.0 in an Astro project.

🚀 Project Overview

This repository contains a step-by-step guide and example code for migrating an existing Astro project from Tailwind CSS 3.14.7 to the latest Tailwind CSS 4.0. The migration process is documented to help developers understand the changes and successfully upgrade their projects.

📋 Prerequisites

• Node.js 20 or higher
• Astro 5.5.5 project with Tailwind CSS 3.14.7 installed
• Basic understanding of Astro and Tailwind CSS

🔄 Migration Steps

1. Backup Your Current Configuration

Before starting the migration, create a backup of your current Tailwind configuration and styles:

cp tailwind.config.js tailwind.config.backup.js
cp src/styles/tailwind.css src/styles/tailwind.backup.css

2. Run the Tailwind CSS Upgrade Tool

Use the official Tailwind CSS upgrade tool to automatically convert your configuration:

npx @tailwindcss/upgrade@next

This tool will perform several important tasks:

• Analyze your existing Tailwind configuration and update it to the v4 format
• Convert color palette references to the new format
• Update plugin configurations to be compatible with v4
• Transform any deprecated utility classes in your codebase
• Provide a detailed report of changes made and any manual actions required
• Handle the migration of custom theme extensions

3. Update Dependencies

After running the upgrade tool, update your Tailwind CSS dependencies:

npm install tailwindcss@latest

4. Review and Test

• Review the changes made to your configuration files
• Test your application thoroughly to ensure styles are applied correctly
• Check the console for any warnings or errors related to Tailwind CSS

🔍 Key Changes in Tailwind CSS 4.0

• New color palette system : The color palette has been redesigned
• Simplified configuration : Many configuration options have been simplified
• Improved performance : Faster build times and smaller CSS output
• New features : New utilities and components are available

🛠️ Project Commands

All commands are run from the root of the project, from a terminal:

🚨 Troubleshooting

If you encounter issues after migration:

1. Check the Official Tailwind CSS 4.0 migration guide for specific changes
2. Review the video guide for this migration: Tailwind CSS 4.0 Migration Video Guide
3. Verify that all plugins are compatible with Tailwind CSS 4.0

📚 Reference Resources

For more detailed information about the migration process:

• Official Tailwind CSS 4.0 migration guide
• Tailwind CSS v4 Documentation
• Video Tutorial: Migrating to Tailwind CSS v4
• Astro Documentation
• Astro + Tailwind Integration Guide

📝 License

This project is licensed under the MIT License - see the LICENSE file for details.