SU-SWS/decanter

///
/// Pushes a grid column by changing its left margin.
///
/// @name flex-grid-push
///
/// @param {integer} $size - The number of columns to 'push'
/// @param {integer} $columns - The number of columns in the grid.
///
/// @group mixin
@mixin flex-grid-push($size: 1, $columns: $su-grid-columns) {
  $number: $size / $columns;
  margin-left: if($number == 0, 0, percentage($number));
}