@mixin thin-scrollbar {
  scrollbar-width: thin;
  &::-webkit-scrollbar {
    width: 9px;
  }
  &::-webkit-scrollbar-track {
    background: transparent;
  }
  &::-webkit-scrollbar-thumb {
    background-color: rgba(155, 155, 155, 0.5);
    border-radius: 20px;
    border: transparent;
  }
}