astro/.changeset/real-spies-pretend.md

@astrojs/tailwind
major

Let tailwind postcss plugin load its config file itself. This changes the tailwind.config.js loading behaviour where Tailwind would load the config file from process.cwd() instead of the project root. You can configure the integration's config.path option to load from a specific path instead.

import { defineConfig } from 'astro/config';
import tailwind from '@astrojs/tailwind';
import { fileURLToPath } from 'url';

export default defineConfig({
	integrations: [
		tailwind({
			config: {
				path: fileURLToPath(new URL('./tailwind.config.js', import.meta.url)),
			},
		}),
	],
});

This change also requires a Tailwind config file to exist in your project as Astro's fallback value is no longer provided. It is set up automatically during astro add tailwind, but you can also manually create a tailwind.config.cjs file in your project root:

/** @type {import('tailwindcss').Config} */
module.exports = {
	content: ['./src/**/*.{astro,html,js,jsx,md,mdx,svelte,ts,tsx,vue}'],
	theme: {
		extend: {},
	},
	plugins: [],
}