!width = 100%
!grid = 12
!margin = 1%
!box = !width / !grid

=grid(!count)
  width = (!count * !box) - (2 * !margin)
  display: inline
  float: left
  position: relative
  margin-left = !margin
  margin-right = !margin
=prefix(!count)
  padding-left = !count * !box
=suffix(!count)
  padding-right = !count * !box
=push(!count)
  left = !count * !box
=pull(!count)
  left = !count * !box * -1
=flush_left
  margin-left: 0
=flush_right
  margin-right: 0
=flush
  margin-left: 0
  margin-right: 0
=clear
  clear: left

.container_#{!grid}
  width = !width
  position: relative
  margin-left: auto
  margin-right: auto
  overflow: hidden
  @for !marker from 1 through !grid
    .grid_#{!marker}
      +grid(!marker)
    .prefix_#{!marker}
      +prefix(!marker)
    .suffix_#{!marker}
      +suffix(!marker)
    .push_#{!marker}
      +push(!marker)
    .pull_#{!marker}
      +pull(!marker)
  .flush_left, .alpha
    +flush_left
  .flush_right, .omega
    +flush_right
  .flush
    +flush
  .row, .newline
    +clear