flutter_SanDev003

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Material App',
      home: Scaffold(
        appBar: AppBar(
          title: Text('Material App Bar'),
        ),
        body: Column(
          mainAxisAlignment: MainAxisAlignment.start,
          mainAxisSize: MainAxisSize.max,
          children: [
            Row(
              children: [
                Container(
                  margin: const EdgeInsets.fromLTRB(5, 10, 5, 0),
                  height: 150,
                  width: 100,
                  color: Colors.amber,
                ),
                Expanded(
                  child: Container(
                    margin: const EdgeInsets.fromLTRB(5, 10, 5, 0),
                    height: 150,
                    width: 100,
                    color: Colors.greenAccent,
                  ),
                ),
                Container(
                  margin: const EdgeInsets.fromLTRB(5, 10, 5, 0),
                  height: 150,
                  width: 100,
                  color: Colors.red,
                ),
              ],
            ),
            Row(children: [
              Expanded(
                child: Container(
                  margin: const EdgeInsets.fromLTRB(5, 10, 5, 0),
                  height: 150,
                  width: 100,
                  child: FlutterLogo(size: 80,),
                  color: Colors.cyanAccent,
                ),
              ),
            ]),
            /////////////////////////////
            Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              crossAxisAlignment: CrossAxisAlignment.center,
              mainAxisSize: MainAxisSize.max,
              children: [
                Expanded(
                  child: Container(
                    margin: const EdgeInsets.fromLTRB(5, 10, 5, 0),
                    height: 280,
                    width: 80,
                    color: Colors.red[500],
                  ),
                ),
                Column(
                  children: [
                    Container(
                      margin: const EdgeInsets.fromLTRB(5, 10, 5, 0),
                      height: 120,
                      width: 270,
                      color: Colors.blue[500],
                    ),
                    Row(
                      children: [
                        Container(
                          margin: const EdgeInsets.fromLTRB(5, 10, 0, 0),
                          height: 150,
                          width: 80,
                          color: Colors.amber[500],
                        ),
                        Container(
                          margin: const EdgeInsets.fromLTRB(5, 10, 0, 0),
                          height: 150,
                          width: 100,
                          color: Colors.black,
                        ),
                        Container(
                          margin: const EdgeInsets.fromLTRB(5, 10, 5, 0),
                          height: 150,
                          width: 80,
                          color: Colors.cyan,
                        ),
                      ],
                    ),
                  ],
                ),
              ],
            )
          ],
        ),
      ),
    );
  }
}