title: Bootstrap 4 scss files
body: <p>I'm trying to install Bootstrap 4 with Yarn within a Symfony 4 project.</p>
  
  <p>On the <a href="https://github.com/twbs/bootstrap" rel="nofollow noreferrer">Bootstrap page</a> it states in the <a href="https://github.com/twbs/bootstrap#whats-included" rel="nofollow noreferrer">"Whats included" section</a> which files will come, and those are only <code>.css</code> files.</p>
  
  <p>When I add the library with yarn, there are no <code>.scss</code> files in the directory. </p>
  
  <p>How can I get the SCSS version of Bootstrap 4?</p>
  
  <p>Thanks in advance!</p>