$margin = 1rem
.m0
  margin: 0
.mx0
  margin-left: 0
  margin-right: 0
.my0
  margin-top: 0
  margin-bottom: 0
.m1
  margin: $margin
.mx1
  margin-left: $margin
  margin-right: $margin
.my1
  margin-top: $margin
  margin-bottom: $margin
.m2
  margin: ($margin * 2)
.mx2
  margin-left: ($margin * 2)
  margin-right: ($margin * 2)
.my2
  margin-top: ($margin * 2)
  margin-bottom: ($margin * 2)