_setBreakpointGridCol.scss

/*
  @mixin setBreakpointGridCol

  Adds a `colspan-` class with a given index, with a breakpoint helper
  (to span number of columns equal to index)

*/

@mixin setBreakpointGridCol($index, $breakpoint: null) {
  @if ($breakpoint) {
    .col-#{$index}\@#{$breakpoint} {
      --grid-columns: #{$index};
      grid-column: span #{$index};
    }
  } @else {
    @include setGridCol($index);
  }
}