title: Scrollbar on firefox not working
body: <p>I put the custom scroll bar it works on all browser but on Firefox it doesn't work.</p>
  
  <pre><code>::-moz-scrollbar {
      width: 6px;
  }
  
  
  ::-moz-scrollbar-track {
      -moz-box-shadow: inset 0 0 6px rgba(0,0,0,0.3); 
      -moz-border-radius: 10px;
      border-radius: 10px;
  }
  
  
  ::-moz-scrollbar-thumb {
      -moz-border-radius: 10px;
      border-radius: 10px;
      background: rgba(255,0,0); 
      -moz-box-shadow: inset 0 0 6px rgba(0,0,0,0.5); 
  }
  ::-moz-scrollbar-thumb:window-inactive {
      background: rgba(255,0,0); 
  }
  </code></pre>