Use Tailwind integration in Create React App 5

Getting started with Tailwind in Create React App could not be easier. You don't need to use typescript but it will make your app easier to maintain. npx clear-npx-cache gets rid off old cached versions you might have of CRA.

Scaffold new CRA App

npx clear-npx-cache

npx create-react-app my-app --template typescript

Generate Tailwind files

Running npx tailwindcss init -p will generate a pre configured postcss.config.js for tailwind and a tailwind.config.js.

cd my-app

npx tailwindcss init -p 

Point tailwind.config.js to your react files

module.exports = {
  content: ["./src/**/*.{js,jsx,ts,tsx}"],
  theme: {
    extend: {},
  },
  plugins: [],
};

Update src/index.css to include Tailwind

@tailwind base;
@tailwind components;
@tailwind utilities;

html,
body,
#root {
  height: 100%;
}

Add come Tailwind classes to src/App.tsx

import React from "react";

function App() {
  return (
    <div className="App ">
      <div className="mx-auto">
        <div className="bg-gray-50 pt-16 pb-20 px-4 sm:px-6 lg:pt-24 lg:pb-28 lg:px-8">
          <div className="relative max-w-7xl mx-auto">
            <div className="mt-12 max-w-lg mx-auto grid gap-5 lg:grid-cols-3 lg:max-w-none">
              <div className="flex flex-col rounded-lg shadow-lg overflow-hidden">
                <div className="flex-shrink-0">
                  <img
                    className="h-48 w-full object-cover"
                    src="https://images.unsplash.com/photo-1496128858413-b36217c2ce36?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1679&q=80"
                    alt=""
                  />
                </div>
                <div className="flex-1 bg-white p-6 flex flex-col justify-between">
                  <div className="flex-1">
                    <p className="text-sm font-medium text-indigo-600">
                      <span className="hover:underline">Article</span>
                    </p>
                    <span className="block mt-2">
                      <p className="text-xl font-semibold text-gray-900">
                        Post title
                      </p>
                      <p className="mt-3 text-base text-gray-500">
                        Lorem ipsum dolor sit amet consectetur adipisicing elit.
                        Architecto accusantium praesentium eius, ut atque fuga
                        culpa, similique sequi cum eos quis dolorum.
                      </p>
                    </span>
                  </div>
                  <div className="mt-6 flex items-center">
                    <div className="flex-shrink-0">
                      <span>
                        <span className="sr-only">John Doe</span>
                        <img
                          className="h-10 w-10 rounded-full"
                          src="https://images.unsplash.com/photo-1472099645785-5658abf4ff4e?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=facearea&facepad=2&w=256&h=256&q=80"
                          alt=""
                        />
                      </span>
                    </div>
                    <div className="ml-3">
                      <p className="text-sm font-medium text-gray-900">
                        <span className="hover:underline">Roel Aufderehar</span>
                      </p>
                      <div className="flex space-x-1 text-sm text-gray-500">
                        <time dateTime="2020-03-16">Mar 16, 2020</time>
                        <span aria-hidden="true">·</span>
                        <span>6 min read</span>
                      </div>
                    </div>
                  </div>
                </div>
              </div>
            </div>
          </div>
        </div>
      </div>
    </div>
  );
}

export default App;

Run server and start building your ui with Tailwind

npm run start