Flutter linear layout, filling

       Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              Expanded(// This is the key 
                child: Container(
                  alignment: Alignment.center,// This is filled 
                  child: const Text(
                    " ",
                    style: TextStyle(fontSize: 18),
                  ),
                ),
              ),
              Expanded(// This is the key 
                child: Container(
                  margin: const EdgeInsets.only(left: 16, top: 15),
                  alignment: Alignment.center,// This is filled 
                  child: const Text(
                    " Throw one ",
                    style: TextStyle(
                        fontSize: 16,
                        color: Color(0xFF1A1A1A),
                        fontWeight: FontWeight.w500),
                  ),
                ),
              ),
              Expanded(// This is the key 
                  child: GestureDetector(
                onTap: () {
    
                  MyRouter.pushMy(context, BottleRule());
                },
                child: Container(
                  alignment: Alignment.centerRight,// This is filled 
                  margin: EdgeInsets.only(top: 15),
                  child: Container(
                    margin: EdgeInsets.only(right: 16),
                    child: const Image(
                      image: AssetImage(
                          'assets/images/icon_drift_instrution_black.png'),
                      width: 24,
                      height: 24,
                    ),
                  ),
                ),
              )),
            ],
          ),