[Flutter] 단일 박스(Container) 위젯 작성

📚 Container, SizedBox, Center 1. Center child 를 가운데 배치합니다. const Center( child: Text('Flutter My Home Page'); ) 2. Containsar child 레이아웃의 위젯 class MyHomePage extends StatelessWidget { const MyHomePage({ Key? key, }) : super(key: key); @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Center(child: const Text('Flutter My App Bar')), ), body: Container( color: ..