ResponsiveUIWithAspectRatio.dart

  Column buildColumnWithAspectRatios() {
    return Column(
      children: [
        AspectRatio(
          aspectRatio: 10 / 5,
          child: Container(
            color: Colors.purple,
          ),
        ),
        AspectRatio(
          aspectRatio: 15 / 5,
          child: Container(
            color: Colors.yellow,
          ),
        ),
        AspectRatio(
          aspectRatio: 20 / 5,
          child: Container(
            color: Colors.red,
          ),
        ),
        AspectRatio(
          aspectRatio: 9 / 4,
          child: Container(
            color: Colors.blue,
          ),
        ),
      ],
    );
  }