//flutter
import 'package:flutter/material.dart';

void main() {
  return runApp(TestPage());
}

//リスト4.17
class TestPage extends StatelessWidget{
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: '区切り線',
      home: Scaffold(
        appBar: AppBar(title: Text('区切り線')),
        body: Center(
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              Container(
                width: 300,
                height: 100,
                color: Colors.blueGrey,
              ),
              Divider(
                height: 30,
                thickness: 3,
                color: Colors.grey,
                indent: 4,
                endIndent: 4,
              ),
              Container(
                width: 300,
                height: 100,
                color: Colors.blueGrey,
              )
            ],
          ),
        )
      )
    );
  }
}