CODE EXAMPLE FOR JAVASCRIPT

bootstrap in react

     1. install react-bootstrap

                npm install react-bootstrap bootstrap


     2. import css file in your index.js or app.js

                import 'bootstrap/dist/css/bootstrap.min.css';

             <link
              rel="stylesheet"
              href="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css"
              integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T"
              crossorigin="anonymous"
             />

      3. import components like

                import { Button } from 'react-bootstrap';