how to add bootstrap in node module react js code example

Example 1: add bootstrap to react

1.run commnad in cmd
npm install bootstrap --save

2.after install add this to index.js
import 'bootstrap/dist/css/bootstrap.min.css';

Example 2: add bootstrap to react app

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css"
   integrity="sha384-9gVQ4dYFwwWSjIDZnLEWnxCjeSWFphJiwGPXr1jddIhOegiu1FwO5qRGvFXOdJZ4" crossorigin="anonymous">