container_wrapper.dart

class ContainerWrapper extends StatelessWidget {
  final Widget child;
  final double widthScale;

  ContainerWrapper({@required this.child, this.widthScale = 0.8});

  @override
  Widget build(BuildContext context) {
    var size = MediaQuery.of(context).size;
    return SizedBox(
      width: size.width * widthScale,
      child: Container(
        color: Colors.transparent,
        child: Container(
          decoration: BoxDecoration(
              color: const Color(0xe6ffffff),
              boxShadow: [
                BoxShadow(color: const Color(0x28000000), blurRadius: 5.0)
              ],
              borderRadius: BorderRadius.all(Radius.circular(16.0))),
          child: child,
        ),
      ),
    );
  }
}