ninja12 Column

//Column

import 'package:flutter/material.dart';

void main() => runApp(MaterialApp(
      home: Home(),
    ));

class Home extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(
          'App bar',
          style: TextStyle(color: Colors.white),
        ),
        centerTitle: true,
        backgroundColor: Colors.red,
      ),
      body: Column(
        mainAxisAlignment : MainAxisAlignment.end,
        crossAxisAlignment : CrossAxisAlignment.end,
        children :  <Widget>[
          Container(
            padding : EdgeInsets.all(20.0),
            color : Colors.blue,
            child : Text('one'),
          ),
          Container(
            padding : EdgeInsets.all(30.0),
            color : Colors.green,
            child : Text('two'),
          ),
          Container(
            padding : EdgeInsets.all(40.0),
            color : Colors.orange,
            child : Text('three'),
          ),
        ],
      ),
      floatingActionButton: FloatingActionButton(
        child: Text('click me'),
        onPressed: null,
        backgroundColor: Colors.red,
      ),
    );
  }
}