Wrap_content_child.dart

// Note  !!
// How Wrap_content ?  let size match  child height ?
// now  not work  help me fix it 
//Ref : https://stackoverflow.com/questions/50713888/how-to-show-image-from-network-in-flutter-boxdecoration
// https://blog.csdn.net/qq_24531461/article/details/85541613
// Yes i do not want set height or Width or  "Width & height "

class UrbanCongratulationsWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
  return FittedBox(
        child: Container(
               // how remove BoxConstraints ?
//             constraints: BoxConstraints(
//               minHeight: 100,
//               maxHeight: 100,
//               minWidth: MediaQuery.of(context).size.width,
//               maxWidth: MediaQuery.of(context).size.width,
//             ),
            alignment: FractionalOffset(0.5, 0.5),
            padding: EdgeInsets.fromLTRB(32, 0, 0, 0),
            decoration: BoxDecoration(
              // color: Colors.yellow,
                color: Color(0x00000000),
                image: DecorationImage(
                    image:NetworkImage("https://purepng.com/public/uploads/large/purepng.com-mariomariofictional-charactervideo-gamefranchisenintendodesigner-1701528634653vywuz.png"),
                    fit: BoxFit.cover
                )
            ),

            child:AutoSizeText( '恭喜你過關',
        textAlign: TextAlign.center,
        maxFontSize: 22,
        maxLines: 1,
        style: TextStyle(
            fontSize: 20,
            color: Colors.white, ))
    );
  }

Wrap_content_parent.dart

class ControllerDemoPage extends StatelessWidget {
    @override
   Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(
          "ControllerDemoPage",
        ),
      ),
      body:  UrbanCongratulationsWidget());
  }
}