birden fazla container ı üst üste kolona yerleştirelim

import 'package:flutter/material.dart';

//void main() =>runApp( new MaterialApp(home: new Text('Merhaba Dünya')));

void main() {

  runApp(MyApp());

}

// STLESS yaz enter a bas

class MyApp extends StatelessWidget {

  const MyApp({super.key});

  @override

  Widget build(BuildContext context) {

    return  MaterialApp(

    home: Scaffold(

      appBar: AppBar(backgroundColor: Colors.teal,//Colors.red,//Colors.blue,

      title: Text('Uygulama Bar')

      ),

      //body: Center(child: Text('Herkese Merhaba')),

      //body: Center(child: Image(image:AssetImage('images/poor_dad.jpg') )

      body:Container(

        color:Colors.amberAccent,

        width: 100.0,

        height:100.0,

        child:  Text('Merhaba Dünya'),

       

        ),

      ),      

    );

  }

}