title: Why my display is different than react-bootstrap example?
body: <p>I got this example from <a href="https://codesandbox.io/s/github/react-bootstrap/code-sandbox-examples/tree/master/basic" rel="nofollow noreferrer">https://codesandbox.io/s/github/react-bootstrap/code-sandbox-examples/tree/master/basic</a>. Referring to below image:</p>
  
  <p><a href="https://ibb.co/rZPn6L5" rel="nofollow noreferrer">https://ibb.co/rZPn6L5</a></p>
  
  <p>I copied whole code App.js and App.css, did a npm start. Below is from my web browser</p>
  
  <p><a href="https://ibb.co/LrP4NR2" rel="nofollow noreferrer">https://ibb.co/LrP4NR2</a></p>
  
  <p>Anything I missed ? My display is different that the one showed in codesandbox.</p>