@mixin when-printing {
  @media print {
    @content;
  }
}

@mixin when-not-printing {
  @media not print {
    @content;
  }
}

@mixin hidden-when-printing {
  @include when-printing {
    // We really, really don't want to see this thing when it is printed.
    // stylelint-disable-next-line declaration-no-important
    display: none !important;
  }
}