@mixin scrollbar(
  $thumb-background: hsla(0,0%,100%,.2),
  $thumb-shadow: hsla(0,0%,100%,.05),
  $track-background:hsla(0,0%,100%,.15),
  $track-shadow: rgba(37,37,37,.05)
  ) {
    ::-webkit-scrollbar {
        width: 6px;
        height: 6px;
    }
    ::-webkit-scrollbar-thumb {
        background: $thumb-background;
        border-radius: 3px;
        box-shadow: inset 0 0 5px $thumb-shadow;
    }
    ::-webkit-scrollbar-track {
        background: $track-background;
        border-radius: 3px;
        box-shadow: inset 0 0 5px $track-shadow;
    }
}

@mixin scrollbar-light {
  @include scrollbar(
    hsla(0,0%,0%,.2), hsla(0,0%,0%,.05),
    hsla(0,0%,0%,.15), rgba(255,255,255,.05)
  )
}