title: Can angular-cli remove unused css?
body: <p>so far the smallest bundle I can create with angular cli is by running </p>
  
  <blockquote>
    <p>ng build --aot true -prod</p>
  </blockquote>
  
  <p>I was wondering if the build process also removes unused css classes e.g. from bootstrap?</p>
  
  <p>If not how can I add libraries like purifycss to it?</p>
  
  <p><strong>EDIT April 2018</strong></p>
  
  <p>I still did not find any satisfying solution to his problem, especially one that is compatible with the lazy loading modules with angular...</p>
  
  <p>Cheers</p>