@function columns-width($num-columns) {
$width: $num-columns * ($column-width + $gutter-width) - $gutter-width; @return max($width, 0);
}
@function units-width($num-units) {
$width: $num-units * ($unit-width + $gutter-width) - $gutter-width; @return max($width, 0);
}