$pad-auto: auto;
$pad-xsmall: px-to-rem(7);
$pad-small: px-to-rem(13);
$pad-medium: px-to-rem(16);
$pad-base: px-to-rem(18);
$pad-large: px-to-rem(24);
$pad-half: px-to-rem(9);
$pad-none: 0;
$pad-most: px-to-rem(40);