1, 'sm' => null, 'md' => null, 'lg' => null, 'xl' => null, '2xl' => null, ]; public function columnSpan(array | int | string | Closure | null $span): static { if (! is_array($span)) { $span = [ 'default' => $span, ]; } $this->columnSpan = array_merge($this->columnSpan, $span); return $this; } public function getColumnSpan(int | string | null $breakpoint = null): array | int | string | null { $span = $this->columnSpan; if ($breakpoint !== null) { return $this->evaluate($span[$breakpoint] ?? null); } return array_map( fn (array | int | string | Closure | null $value): array | int | string | null => $this->evaluate($value), $span, ); } }