FUTREM, JAK OTRZYMAĆ PUNKIEM WYSOKU URZĄDZENIA

You can use the FractionalSizedBox to size a widget based on percentages

https://api.flutter.dev/flutter/widgets/FractionallySizedBox-class.html

FractionallySizedBox(
                widthFactor: 1,
                heightFactor: 0.31,
                child: Container(
                 	...
                ),
              ),
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