$font-size-xx-large: rem-calc(36);
$font-size-x-large: rem-calc(24);
$font-size-large: rem-calc(18);
$font-size-base: rem-calc(16);
$font-size-small: rem-calc(15);
$font-size-x-small: rem-calc(14);
$font-size-xx-small: rem-calc(13);
$font-size-xxx-small: rem-calc(12);
$font-size-xxxx-small: rem-calc(11);
$font-size-xxxxx-small: rem-calc(10);