'./components/**/*.{js,ts,jsx,tsx,mdx}',
 
    // Or if using `src` directory:
    './src/**/*.{js,ts,jsx,tsx,mdx}',
  ],
  theme: {
    extend: {},
  },
  plugins: [],
}
You do not need to modify postcss.config.js.
Importing Styles
Add the Tailwind CSS directives that Tailwind will use to inject its generated styles to a Global Stylesheet in your application, for example:app/globals.css @tailwind base;
@tailwind components;
@tailwind utilities;Inside the root layout (app/layout.tsx), import the globals.css stylesheet to apply the styles to every route in your application.app/layout.tsx import type { Metadata } from 'next'
 
// These styles apply to every route in the application
import './globals.css'