anchor.diff:              paymentItems: _paymentItems,
               style: GooglePayButtonStyle.black,
               type: GooglePayButtonType.pay,
  -            margin: EdgeInsets.only(top: 15.0),
  +            margin: const EdgeInsets.only(top: 15.0),
               onPaymentResult: onGooglePayResult,
  -            loadingIndicator: Center(
  +            loadingIndicator: const Center(
                 child: CircularProgressIndicator(),
               ),
             ),
  
positive.code:             paymentItems: _paymentItems,
              style: ApplePayButtonStyle.black,
              type: ApplePayButtonType.buy,
              margin: EdgeInsets.only(top: 15.0),
              onPaymentResult: onApplePayResult,
              loadingIndicator: Center(
                child: CircularProgressIndicator(),
              ),
            ),
  
negative.code:             ),
            ),
            const SizedBox(height: 5),
            const Text(
              'A versatile full-zip that you can wear all day long and even...',
              style: TextStyle(
                color: Color(0xff777777),
  