Multiples of 5, Max:100

p-a-{5x}

  <div class="p-a-15">
    15px padding
  </div>

  <div class="p-a-0">
    no padding
  </div>

Multiples of 5, Max:100

p-t-{5x}
p-r-{5x}
p-b-{5x}
p-l-{5x}
p-h-{5x}
p-v-{5x}

  <div class="p-t-0">
    no top padding
  </div>

  <div class="p-r-30">
    30px right padding
  </div>

  <div class="p-b-40">
    40px bottom padding
  </div>

  <div class="p-l-50">
    50px left padding
  </div>

  <div class="p-h-10">
    10px horizontal (left and right) padding
  </div>

  <div class="p-v-30">
    35px vertical (top and bottom) padding
  </div>

Multiples of 5, Max:100

m-a-{5x}

  <div class="m-a-15">
    15px margin
  </div>

  <div class="m-a-0">
    no margin
  </div>

Multiples of 5, Max:100

m-t-{5x}
m-r-{5x}
m-b-{5x}
m-l-{5x}
m-h-{5x}
m-v-{5x}

  <div class="m-t-0">
    no top margin
  </div>

  <div class="m-r-30">
    30px right margin
  </div>

  <div class="m-b-40">
    40px bottom margin
  </div>

  <div class="m-l-50">
    50px left margin
  </div>

  <div class="m-h-50">
    50px horizontal (left and right) margin
  </div>

  <div class="m-v-40">
    40px vertical (top and bottom) margin
  </div>

m-t-a
m-r-a
m-b-a
m-l-a
m-h-a
m-v-a
m-a-a

  <div class="m-t-a">
    auto top margin
  </div>

  <div class="m-r-a">
    auto right margin
  </div>

  <div class="m-b-a">
    auto bottom margin
  </div>

  <div class="m-l-a">
    auto left margin
  </div>

  <div class="m-h-a">
    auto horizontal (left and right) margin
  </div>

  <div class="m-v-a">
    auto vertical (top and bottom) margin
  </div>

  <div class="m-a-a">
    auto all directions margin
  </div>