class CustomersExportStyling implements FromCollection, WithEvents
{
    public function collection()
    {
        return User::all();
    }

   public function registerEvents(): array
   {
      return [
        AfterSheet::class    => function(AfterSheet $event) {
            // All headers - set font size to 14
            $cellRange = 'A1:W1';
            $event->sheet->getDelegate()->getStyle($cellRange)->getFont()->setSize(14);

            // Apply array of styles to B2:G8 cell range
            $styleArray = [
                'bord ers' => [
                    'outline' => [
                        'borderStyle' => \PhpOffice\PhpSpreadsheet\Style\Border::BORDER_THICK,
                        'color' => ['argb' => 'FFFF0000'],
                    ]
                ]
            ];
            $event->sheet->getDelegate()->getStyle('B2:G8')->applyFromArray($styleArray);

            // Set first row to height 20
            $event->sheet->getDelegate()->getRowDimension(1)->setRowHeight(20);

            // Set A1:D4 range to wrap text in cells
            $event->sheet->getDelegate()->getStyle('A1:D4')
                ->getAlignment()->setWrapText(true);
        },
      ];
   }
}