Spacing utilities that apply to all breakpoints.
- m - for classes that set margin
- p - for classes that set padding
- t - for classes that set margin-top or padding-top
- b - for classes that set margin-bottom or padding-bottom
- l - for classes that set margin-left or padding-left
- r - for classes that set margin-right or padding-right
- x - for classes that set both *-left and *-right
- y - for classes that set both *-top and *-bottom
- blank - for classes that set a margin or padding on all 4 sides of the element
- 0 - for classes that eliminate the margin or padding by setting it to 0
- 1 - (by default) for classes that set the margin or padding to 0.25
- 2 - (by default) for classes that set the margin or padding to 0.5
- 3 - (by default) for classes that set the margin or padding to 1
- 4 - (by default) for classes that set the margin or padding to 1.5
- 5 - (by default) for classes that set the margin or padding to 3
- auto - for classes that set the margin to auto