Tailwind CSS 3 is not being applied in my React app - reactjs

Question

I want to use Tailwind CSS in my React app, but it is not working. I followed the description on the Tailwind site for how to install it, but the CSS is not being applied.
App.js
// import './App.css';
import './index.css';
import { BrowserRouter as Router, Routes, Route } from "react-router-dom";
import Home from './Home/Home'
function App() {
return (
<Router>
<Routes>
<Route>
<Route exact path="/" element={<Home/>} />
</Route>
</Routes>
</Router> );
}
export default App;
index.css
#tailwind base;
#tailwind components;
#tailwind utilities;
tailwind.config
module.exports = {
content: [
"./src/**/*.{js,jsx,ts,tsx}",
"./public/index.html",
],
purge: [],
darkMode: false, // or 'media' or 'class'
theme: {
extend: {},
},
variants: {
extend: {},
},
plugins: [],
}
postcss.config.js
module.exports = {
plugins: {
tailwindcss: {},
autoprefixer: {},
},
}
package.json
{
"name": "archives",
"version": "0.1.0",
"private": true,
"dependencies": {
"#tailwindcss/postcss7-compat": "^2.2.17",
"#testing-library/jest-dom": "^5.16.4",
"#testing-library/react": "^13.3.0",
"#testing-library/user-event": "^13.5.0",
"nanoid": "^4.0.0",
"picocolors": "^1.0.0",
"postcss-loader": "^7.0.1",
"postcss-preset-env": "^7.7.2",
"react": "^18.2.0",
"react-dom": "^18.2.0",
"react-router-dom": "^6.3.0",
"react-scripts": "^5.0.1",
"source-map-js": "^1.0.2",
"web-vitals": "^2.1.4"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
},
"eslintConfig": {
"extends": [
"react-app",
"react-app/jest"
]
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 1 safari version"
]
},
"devDependencies": {
"autoprefixer": "^9.8.8",
"postcss": "^7.0.39",
"postcss-flexbugs-fixes": "^5.0.2",
"tailwindcss": "^3.1.6"
}
}
Home.js
import React from 'react';
import '../index.css';
const Home = () => {
return (
<div className='w-full h-full'>
<div className='flex justify-center'>
<h1 className=
'text-2xl lg:text-5xl font-bold text-green-600 mt-12'>
hi</h1>
</div>
</div>
);
};
export default Home;

Answer 1

My tailwind is also broken, however, a few weeks ago I ran into the same issue.
The solution that worked for me was to add in any vanilla css to my index.css like so:
#tailwind base;
#tailwind components;
#tailwind utilities;
body {
background-color: #3f4040;`
}
(Sorry if this isn't a great post. It's my first!)