/* width */
   
    ::-webkit-scrollbar {
       width: 6px;
   }
   /* Track */
   
   ::-webkit-scrollbar-track {
       background: #f1f1f1;
   }
   /* Handle */
   
   ::-webkit-scrollbar-thumb {
       background: #888;
   }
   /* Handle on hover */
   
   ::-webkit-scrollbar-thumb:hover {
       background: #555;
   }