public function configureSettings(OptionsResolver $resolver)
 {
     parent::configureSettings($resolver);
     $resolver->setDefaults(['full_width' => false, 'no_padding' => false, "per_row" => 1]);
     $resolver->setAllowedTypes("full_width", ['boolean', 'string']);
     $resolver->setAllowedTypes("no_padding", ['boolean', 'string']);
     $resolver->setAllowedTypes("per_row", ['integer', 'string']);
 }