column-width*12; }
    .offset-by-thirteen { padding-left: $grid-column-width*13; }
    .offset-by-fourteen { padding-left: $grid-column-width*14; }
    .offset-by-fifteen  { padding-left: $grid-column-width*15; }

    .pull-by-one      { margin-left: -$grid-column-width; }
    .pull-by-two      { margin-left: -$grid-column-width*2; }
    .pull-by-three    { margin-left: -$grid-column-width*3; }
    .pull-by-four     { margin-left: -$grid-column-width*4; }
    .pull-by-five     { margin-left: -$grid-column-