gistfile1.sass

$grid_column_width: 40px
$grid_column_margin: 10px
$grid_columns: 12
$grid_width: $grid_columns * ($grid_column_width + $grid_column_margin * 2)

=container
  margin-left: auto
  margin-right: auto
  width: $grid_width
	
=alpha
  margin-left: 0

=omega
  margin-right: 0

=column($columns, $adjustment: 0px)
  width: $columns * ($grid_column_width + $grid_column_margin * 2) - $grid_column_margin * 2 + $adjustment
  display: inline
  float: left
  position: relative
  margin-left: $grid_column_margin
  margin-right: $grid_column_margin

=prefix($columns)
  padding-left: $columns * ($grid_column_width + $grid_column_margin * 2)

=suffix($columns)
  padding-right: $columns * ($grid_column_width + $grid_column_margin * 2)

=clearfix
  *display: inline-block
  &:after
    content: " "
    display: block
    height: 0
    clear: both
    visibility: hidden