Following @ilicmarko's comment, here's my spacing.scss file…
(see spacing.scss)
…which generates the following spacing utility classes…
(see spacing.css)
…and is configurable by changing the values of $sizeUnit (rem, em, px), $marginKey ('m', 'marg', 'margin', etc), $paddingKey ('p', 'pad', 'padding', etc), $separator ('-', '_', '' for none, etc) and $sizes (whatever keys/values you need).
| .m-none { margin: 0; } | |
| .p-none { padding: 0; } | |
| .m-t-none { margin-top: 0; } | |
| .p-t-none { padding-top: 0; } | |
| .m-r-none { margin-right: 0; } | |
| .p-r-none { padding-right: 0; } | |
| .m-b-none { margin-bottom: 0; } | |
| .p-b-none { padding-bottom: 0; } | |
| .m-l-none { margin-left: 0; } | |
| .p-l-none { padding-left: 0; } | |
| .m-xxs { margin: 0.125rem; } | |
| .p-xxs { padding: 0.125rem; } | |
| .m-t-xxs { margin-top: 0.125rem; } | |
| .p-t-xxs { padding-top: 0.125rem; } | |
| .m-r-xxs { margin-right: 0.125rem; } | |
| .p-r-xxs { padding-right: 0.125rem; } | |
| .m-b-xxs { margin-bottom: 0.125rem; } | |
| .p-b-xxs { padding-bottom: 0.125rem; } | |
| .m-l-xxs { margin-left: 0.125rem; } | |
| .p-l-xxs { padding-left: 0.125rem; } | |
| .m-xs { margin: 0.25rem; } | |
| .p-xs { padding: 0.25rem; } | |
| .m-t-xs { margin-top: 0.25rem; } | |
| .p-t-xs { padding-top: 0.25rem; } | |
| .m-r-xs { margin-right: 0.25rem; } | |
| .p-r-xs { padding-right: 0.25rem; } | |
| .m-b-xs { margin-bottom: 0.25rem; } | |
| .p-b-xs { padding-bottom: 0.25rem; } | |
| .m-l-xs { margin-left: 0.25rem; } | |
| .p-l-xs { padding-left: 0.25rem; } | |
| .m-sm { margin: 0.5rem; } | |
| .p-sm { padding: 0.5rem; } | |
| .m-t-sm { margin-top: 0.5rem; } | |
| .p-t-sm { padding-top: 0.5rem; } | |
| .m-r-sm { margin-right: 0.5rem; } | |
| .p-r-sm { padding-right: 0.5rem; } | |
| .m-b-sm { margin-bottom: 0.5rem; } | |
| .p-b-sm { padding-bottom: 0.5rem; } | |
| .m-l-sm { margin-left: 0.5rem; } | |
| .p-l-sm { padding-left: 0.5rem; } | |
| .m-md { margin: 1rem; } | |
| .p-md { padding: 1rem; } | |
| .m-t-md { margin-top: 1rem; } | |
| .p-t-md { padding-top: 1rem; } | |
| .m-r-md { margin-right: 1rem; } | |
| .p-r-md { padding-right: 1rem; } | |
| .m-b-md { margin-bottom: 1rem; } | |
| .p-b-md { padding-bottom: 1rem; } | |
| .m-l-md { margin-left: 1rem; } | |
| .p-l-md { padding-left: 1rem; } | |
| .m-lg { margin: 2rem; } | |
| .p-lg { padding: 2rem; } | |
| .m-t-lg { margin-top: 2rem; } | |
| .p-t-lg { padding-top: 2rem; } | |
| .m-r-lg { margin-right: 2rem; } | |
| .p-r-lg { padding-right: 2rem; } | |
| .m-b-lg { margin-bottom: 2rem; } | |
| .p-b-lg { padding-bottom: 2rem; } | |
| .m-l-lg { margin-left: 2rem; } | |
| .p-l-lg { padding-left: 2rem; } | |
| .m-xl { margin: 4rem; } | |
| .p-xl { padding: 4rem; } | |
| .m-t-xl { margin-top: 4rem; } | |
| .p-t-xl { padding-top: 4rem; } | |
| .m-r-xl { margin-right: 4rem; } | |
| .p-r-xl { padding-right: 4rem; } | |
| .m-b-xl { margin-bottom: 4rem; } | |
| .p-b-xl { padding-bottom: 4rem; } | |
| .m-l-xl { margin-left: 4rem; } | |
| .p-l-xl { padding-left: 4rem; } | |
| .m-xxl { margin: 8rem; } | |
| .p-xxl { padding: 8rem; } | |
| .m-t-xxl { margin-top: 8rem; } | |
| .p-t-xxl { padding-top: 8rem; } | |
| .m-r-xxl { margin-right: 8rem; } | |
| .p-r-xxl { padding-right: 8rem; } | |
| .m-b-xxl { margin-bottom: 8rem; } | |
| .p-b-xxl { padding-bottom: 8rem; } | |
| .m-l-xxl { margin-left: 8rem; } | |
| .p-l-xxl { padding-left: 8rem; } |
| $sizeUnit: rem; | |
| $marginKey: 'm'; | |
| $paddingKey: 'p'; | |
| $separator: '-'; | |
| $sizes: ( | |
| ('none', 0), | |
| ('xxs', 0.125), | |
| ('xs', 0.25), | |
| ('sm', 0.5), | |
| ('md', 1), | |
| ('lg', 2), | |
| ('xl', 4), | |
| ('xxl', 8), | |
| ); | |
| $positions: ( | |
| ('t', 'top'), | |
| ('r', 'right'), | |
| ('b', 'bottom'), | |
| ('l', 'left') | |
| ); | |
| @function sizeValue($key, $value) { | |
| @return if($key == 'none', 0, $value + $sizeUnit); | |
| } | |
| @each $size in $sizes { | |
| $sizeKey: nth($size, 1); | |
| $sizeValue: nth($size, 2); | |
| .#{$marginKey}#{$separator}#{$sizeKey} { | |
| margin: sizeValue($sizeKey, $sizeValue); | |
| } | |
| .#{$paddingKey}#{$separator}#{$sizeKey} { | |
| padding: sizeValue($sizeKey, $sizeValue); | |
| } | |
| @each $position in $positions { | |
| $posKey: nth($position, 1); | |
| $posValue: nth($position, 2); | |
| .#{$marginKey}#{$separator}#{$posKey}#{$separator}#{$sizeKey} { | |
| margin-#{$posValue}: sizeValue($sizeKey, $sizeValue); | |
| } | |
| .#{$paddingKey}#{$separator}#{$posKey}#{$separator}#{$sizeKey} { | |
| padding-#{$posValue}: sizeValue($sizeKey, $sizeValue); | |
| } | |
| } | |
| } |