Flutter Layout Hints

main.dart

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      // Application name
      title: 'Flutter Hello World',
      // Application theme data, you can set the colors for the application as
      // you want
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      // A widget which will be started on application startup
      home: MyHomePage(title: 'Row vs Column'),
    );
  }
}

class MyHomePage extends StatelessWidget {
  final String title;

  const MyHomePage({@required this.title});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
            centerTitle: true, 
            title: Text(title),
        ),
        body: Container(
            color: Colors.white,         
            child: Column(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,                              
                children: <Widget>[
                    Container(
                        alignment: Alignment.topLeft,  
                        color: Colors.indigo[800],
                        height: 229,
                        child: Row(
                            mainAxisSize: MainAxisSize.min,
                            children: <Widget>[
                                Icon(Icons.tag_faces, size: 28, color: Colors.white),
                                Icon(Icons.tag_faces, size: 58, color: Colors.white),
                                Icon(Icons.tag_faces, size: 28, color: Colors.white),
                            ],
                        ),
                    ),
                    Container(
                        alignment: Alignment.topLeft,  
                        color: Colors.blueAccent,   
                        height: 229,
                        child: Column(
                            mainAxisSize: MainAxisSize.min,
                            children: <Widget>[
                                Icon(Icons.face, size: 28, color: Colors.white),
                                Icon(Icons.face, size: 58, color: Colors.white),
                                Icon(Icons.face, size: 28, color: Colors.white),
                            ],
                        ),
                    ),
                ],
            ), 
        ),
    );
  }
}