flutter_border_rad.dart

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        backgroundColor: Colors.blue,
        body: MyWidget(),
      ),
    );
  }
}

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Stack(children: [
      FractionallySizedBox(
        heightFactor: 0.9,
        widthFactor: 1,
        child: Container(
          child: FlutterLogo(),
          decoration: BoxDecoration(
            color: Colors.white,
            borderRadius: BorderRadius.only(
              bottomRight: Radius.circular(20),
              bottomLeft: Radius.circular(20),
            ),
          ),
        ),
      ),
      Padding(
        padding: EdgeInsets.all(18),
        child: Align(
          alignment: Alignment.bottomCenter,
          child: Text("www.reppnez.org", style: TextStyle(color: Colors.white)),
        ),
      )
    ]);
  }
}