Rounded Corner Rectangle Square Shape In Flutter App

import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
        home: Scaffold(
          appBar: AppBar(
            backgroundColor: Colors.blueAccent,
            title: Text('Rounded Corner Rectangle Square Shape'),
          ),
            backgroundColor: Colors.white,
            body: Center(
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                  children: <Widget>[
                    Container(
                      height: 150.0,
                      width: 300.0,
                      color: Colors.transparent,
                      child: Container(
                          decoration: BoxDecoration(
                              color: Colors.pink,
                              borderRadius: BorderRadius.all(Radius.circular(10.0))),
                          child: new Center(
                            child: new Text("Rounded Corner Rectangle Shape",
                              style: TextStyle(color: Colors.white, fontSize: 20),
                              textAlign: TextAlign.center,),
                          )),
                    ),

                    Container(
                      height: 100.0,
                      width: 155.0,
                      color: Colors.transparent,
                      child: Container(
                          decoration: BoxDecoration(
                              color: Colors.pink,
                              borderRadius: BorderRadius.all(Radius.circular(10.0))),
                          child: new Center(
                            child: new Text("Rounded Corner Square Shape",
                              style: TextStyle(fontSize: 18, color: Colors.white),
                              textAlign: TextAlign.center,),
                          )),
                    ),
                  ],)
            )
        )
    );
  }
}