好看的滚动条

::-webkit-scrollbar {
  -webkit-appearance: none;
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.1);
  border-radius: 0;
}
::-webkit-scrollbar-thumb {
  cursor: pointer;
  border-radius: 5px;
  background: rgba(0, 0, 0, 0.15);
  transition: color 0.2s ease;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.3);
}