title: Hiding the scroll bar in MS Edge and Firefox?
body: <p>I have a scrollable menu, which needs to be scrollable. I hide the scroll bar in Chrome by using:</p>
  
  <pre><code>.menu::-webkit-scrollbar { 
      display: none; 
  }
  </code></pre>
  
  <p>Which works. What is the same for Firefox and MS Edge that will do the same?</p>
  
  <p>Thanks</p>