// Here we generate spacing utility classes for our sizes for all box sides and axis.
// These will output to classes like .px-m (Padding on x-axis, medium size) or .mr-l (Margin right, large size)
@mixin spacing($prop, $propLetter) {
// Here we generate spacing utility classes for our sizes for all box sides and axis.
// These will output to classes like .px-m (Padding on x-axis, medium size) or .mr-l (Margin right, large size)
@mixin spacing($prop, $propLetter) {