title: How to add class name prefix for all classes (in html and in scss files) with webpack?
body: <p>I am creating a plugin for the browser, and on some websites my classes are being overridden by the website's classes.</p>
  
  <p>Is it impossible to add class name prefix for all classes (in HTML and in SCSS files) with webpack? I use webpack: "4.42.0"</p>
  
  <p>Or maybe I need to use another approach?</p>