$infix: breakpoint-infix($breakpoint, $grid-breakpoints);\n\n    @each $prop, $abbrev in (margin: m, padding: p) {\n      @each $size, $length in $spacers {\n        .#{$abbrev}#{$infix}-#{$size} { #{$prop}: $length !important; }\n        .#{$abbrev}t#{$infix}-#{$size},\n        .#{$abbrev}y#{$infix}-#{$size} {\n          #{$prop}-top: $length !important;\n        }\n        .#{$abbrev}r#{$infix}-#{$size},\n        .#{$abbrev}x#{$infix}-#{$size} {\n          #{$prop}-right: $length !important;\n    ...