import 'package:flutter/material.dart';
void main() {
  runApp(exampleApp()); //MaterialApp
}
MaterialApp exampleApp() {
  return MaterialApp(
    home: Scaffold(
    body: Container(
      color:Colors.green,
      alignment: Alignment.center,
      width: double.infinity,    
      height: 100.0,  
      padding: const EdgeInsets.all(35),  
      margin: const EdgeInsets.all(20), 
      transform: Matrix4.rotationZ(0.1),  
      child:const Text("I am Container!",
     
      style: TextStyle(
      fontSize: 20,
      color:Colors.white))
        ),

  )
      
  ); 
}