@mixin span-columns($span: $columns of $container-columns, $display: block) {

$columns: nth($span, 1);
$container-columns: container-span($span);

// Set nesting context (used by shift())
$parent-columns: get-parent-columns($container-columns) !global;

$direction: get-direction($layout-direction, $default-layout-direction);
$opposite-direction: get-opposite-direction($direction);

$display-table: is-display-table($container-display-table, $display);

@if $display-table  {
  display: table-cell;
  width: percentage($columns / $container-columns);
} @else {
  float: #{$opposite-direction};

  @if $display != no-display {
    display: block;
  }

  @if $display == collapse {
    @warn "The 'collapse' argument will be deprecated. Use 'block-collapse' instead."
  }

  @if $display == collapse or $display == block-collapse {
    width: flex-grid($columns, $container-columns) + flex-gutter($container-columns);

    &:last-child {
      width: flex-grid($columns, $container-columns);
    }

  } @else {
    margin-#{$direction}: flex-gutter($container-columns);
    width: flex-grid($columns, $container-columns);

    &:last-child {
      margin-#{$direction}: 0;
    }
  }
}

}