softUI

main.dart

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.grey[300],
      body: Center(
        child: Container(
          width: 200,
          height: 200,
          child: Icon(Icons.android, size: 80,),
          decoration: BoxDecoration(
            color: Colors.grey[300],
            borderRadius: BorderRadius.all(Radius.circular(40)),
            boxShadow: [
              BoxShadow(
                color: Colors.grey[500],
                offset: Offset(5.0, 5.0),
                blurRadius: 15.0,
                spreadRadius: 1,
              ),
              BoxShadow(
                color: Colors.white,
                offset: Offset(-5.0, -5.0),
                blurRadius: 15.0,
                spreadRadius: 1,
              ),
            ]
          ),
        ),
      ),
      
    );
  }
}

https://www.youtube.com/watch?v=LngTgtRerxs