K-Learn

@override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: const Text('Expanded Column Sample'),
        ),
        body: Center(
          child: Container(
              child: Padding(
            padding: const EdgeInsets.all(14.0),
            child: Column(
              children: [
                Row(
                  children: [
                    Flexible(
                      flex: 1,
                      fit: FlexFit.tight,
                      child: Container(
                        height: 175,
                        decoration: BoxDecoration(
                          borderRadius: BorderRadius.circular(10),
                          color: Colors.red,
                        ), //BoxDecoration
                      ), //Container
                    ), //Flexible
                    SizedBox(
                      width: 20,
                    ), //SizedBox
                    Flexible(
                      flex: 1,
                      fit: FlexFit.loose,
                      child: Container(
                          height: 175,
                          decoration: BoxDecoration(
                            borderRadius: BorderRadius.circular(10),
                            color: Colors.red,
                          ) //BoxDecoration
                          ), //Container
                    ) //Flexible
                  ], //[]
                  mainAxisAlignment: MainAxisAlignment.center,
                ), //Row
                Flexible(
                  flex: 1,
                  fit: FlexFit.loose,
                  child: Container(
                    width: 380,
                    height: 200,
                    decoration: BoxDecoration(
                        borderRadius: BorderRadius.circular(10),
                        color: Colors.blue), //BoxDecoration
                  ), //Container
                ), //Flexible
                Row(
                  children: [
                    Flexible(
                      flex: 2,
                      fit: FlexFit.tight,
                      child: Container(
                        width: 180,
                        height: 300,
                        decoration: BoxDecoration(
                          borderRadius: BorderRadius.circular(10),
                          color: Colors.cyan,
                        ), //BoxDecoration
                      ), //Container
                    ), //Flexible
                    SizedBox(
                      width: 20,
                    ), //SizedBox
                    Flexible(
                        flex: 2,
                        fit: FlexFit.tight,
                        child: Container(
                            width: 180,
                            height: 300,
                            decoration: BoxDecoration(
                              borderRadius: BorderRadius.circular(10),
                              color: Colors.cyan,
                            ) //BoxDecoration
                            ) //Container,
                        ) //Flexible
                  ], //[]
                  mainAxisAlignment: MainAxisAlignment.center,
                ), //Row
              ], //[]
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              crossAxisAlignment: CrossAxisAlignment.center,
            ), //Column
          ) //Padding
              ), //Container
        ) //Center
        );
  }