title: How to use npm-installed bootstrap in express?
body: <p>I 'm a beginner of Node.js development,
  Now I try to use bootstrap framework in my first Express web app.</p>
  
  <p>I use </p>
  
  <pre><code>npm install bootstrap
  </code></pre>
  
  <p>to download the files,and it seems that npm puts them in my node_modules folder.</p>
  
  <p>My question is how can I refer to the bootstrap files in my views in express?</p>
  
  <p>I know a typical way is copying the bootstrap file into the public folder. So my html files can find them. But I don't think this is a good idea. </p>
  
  <p>Thank you.</p>