/// Mixin to customize scrollbars
/// Beware, this does not work in all browsers
/// @author Hugo Giraudel
/// @param {Length} $size - Horizontal scrollbar's height and vertical scrollbar's width
/// @param {Color} $foreground-color - Scrollbar's color
/// @param {Color} $background-color [mix($foreground-color, white, 50%)] - Scrollbar's color
/// @example scss - Scrollbar styling
///   @include scrollbars(.5em, slategray);
.scrollbars(@size, @foreground-color, @background-color) {
  // For Google Chrome
  &::-webkit-scrollbar {
    width:  @size;
    height: @size;
  }

  &::-webkit-scrollbar-thumb {
    background: @foreground-color;
    border-radius: 1em;
    cursor: grab;

  }

  &::-webkit-scrollbar-track {
    background: @background-color;
  }

  // For Internet Explorer
  body {
    scrollbar-face-color: @foreground-color;
    scrollbar-track-color: @background-color;
  }
}