import 'package:flutter/material.dart'; import 'package:flutter_zxing_example/configs/constants.dart'; class ContainerX extends StatelessWidget { const ContainerX({Key? key, this.child}) : super(key: key); final Widget? child; @override Widget build(BuildContext context) { return Center( child: Container( constraints: const BoxConstraints(maxWidth: spaceMaxWidth), child: child, ), ); } }