title: How do I add a css class in a GM-script?
body: <p>I found out that this is the way to style all images on a site.
  <pre><code>GM_addStyle(&quot;img { border: 3px dotted green;background-color: red; }&quot;);
  </pre></code></p>
  
  <p>How do I style just a few?
  Is there a way to add a class to the GM_addStyle so that I can call this class later with jQuery like .addClass('myClass')?</p>
  
  <p>Thank you in advance for your help and time for answering the question.</p>