$space_xs:    8px;
$space_sm:    16px;
$space_md:    24px;
$space_lg:    32px;
$space_xl:    40px;
$spaces:(
  space_xs:   $space_xs,
  space_sm:   $space_sm,
  space_md:   $space_md,
  space_lg:   $space_lg,
  space_xl:   $space_xl,
  none: 0
);