$spreadsheet->getActiveSheet()->getStyle('B2')
    ->getFont()->getColor()->setARGB(\PhpOffice\PhpSpreadsheet\Style\Color::COLOR_RED);
$spreadsheet->getActiveSheet()->getStyle('B2')
    ->getAlignment()->setHorizontal(\PhpOffice\PhpSpreadsheet\Style\Alignment::HORIZONTAL_RIGHT);
$spreadsheet->getActiveSheet()->getStyle('B2')
    ->getBorders()->getTop()->setBorderStyle(\PhpOffice\PhpSpreadsheet\Style\Border::BORDER_THICK);
$spreadsheet->getActiveSheet()->getStyle('B2')
    ->getBorders()->getBottom()->setBorderStyle(\PhpOffice\PhpSpreadsheet\Style\Border::BORDER_THICK);
$spreadsheet->getActiveSheet()->getStyle('B2')
    ->getBorders()->getLeft()->setBorderStyle(\PhpOffice\PhpSpreadsheet\Style\Border::BORDER_THICK);
$spreadsheet->getActiveSheet()->getStyle('B2')
    ->getBorders()->getRight()->setBorderStyle(\PhpOffice\PhpSpreadsheet\Style\Border::BORDER_THICK);
$spreadsheet->getActiveSheet()->getStyle('B2')
    ->getFill()->setFillType(\PhpOffice\PhpSpreadsheet\Style\Fill::FILL_SOLID);
$spreadsheet->getActiveSheet()->getStyle('B2')
    ->getFill()->getStartColor()->setARGB('FFFF0000');