title: How to create css class in imported css file with vanilla javascript
body: <p>i want to figure out <strong>how to add new class</strong> to css file, when i've got that file <strong>imported</strong> into javascript:</p>
  <pre class="lang-js prettyprint-override"><code>import &quot;./styles.css&quot;
  
  //add class to that file
  </code></pre>
  <p>I don't want to insert new file to 'link' tag, only to modify that imported file</p>