::-webkit-scrollbar {
  width: 4px;
  border-radius: 5px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: #efefef;
}

::-webkit-scrollbar-thumb {
  background: transparent;
  border-radius: 5px;
  background: #999999;
}

::-webkit-scrollbar-thumb:hover {
  background: #999999;
}