CSS Styling in JSX .... We are use css in JSX many ways. 1 . First of all we use inline css like inline HTML. 2 . second we direct import css file in js file. 3 . If we are make style file in public folder then we use link tag root index.html file 4 . Last but not the list.. we use css module as a variable.. import './App.css' ; import style from './style.module.css' ; function App () { return ( < div className = "App" > < h1 style = {{color: "green" , fontSize: "4rem" }} >Wellcom</ h1 > </ div > ); } export default App ;