postcss.config.cjs

const tailwindcss = require('tailwindcss');
const autoprefixer = require('autoprefixer');
const cssnano = require('cssnano');

const mode = process.env.NODE_ENV;
const dev = mode === 'development';

module.exports = {
  plugins: [
    // Some plugins, like postcss-nested, need to run before Tailwind

    tailwindcss,

    // But others, like autoprefixer, need to run after

    autoprefixer,

    !dev &&
      cssnano({
        preset: 'default'
      })
  ]
};