div scrollbar style

  /* width */
::-webkit-scrollbar {
  width: 10px;
}
/* Track */
  ::-webkit-scrollbar-track {
  background: #f1f1f1; 
}
/* Handle */

  ::-webkit-scrollbar-thumb {
  background: #888; 
}
/* Handle on hover */
::-webkit-scrollbar-thumb:hover {
  
  background: #555; 
}