1 - Follow this documentation -> https://tailwindcss.com/docs/guides/create-react-app

2 - add this -> npm i postcss 3 - add this -> npm i autoprefixer 4 - create manually this file in your project -> postcss.config.js 5 - add below code inside of postcss.config.js

export default {
    plugins: {
      tailwindcss: {},
      autoprefixer: {},
    },
  }