content: import 'package:flutter/material.dart';
  
  import 'second_screen.dart';
  
  class MyHomePage extends StatefulWidget {
    MyHomePage({this.title});
  
    final String title;
  
    @override
    _MyHomePageState createState() => _MyHomePageState();
  }
  
  class _MyHomePageState extends State<MyHomePage> {
    @override
    Widget build(BuildContext context) {
      return Scaffold(
        appBar: AppBar(
          title: Text(widget.title),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              Text(
                'Flutter Navigation',
                style: TextStyle(fontSize: 20.0),
              ),
            ],
          ),
        ),
        floatingActionButton: FloatingActionButton(
          onPressed: () {
            Navigator.of(context).push(MaterialPageRoute(builder: (_) {
              return SecondScreen("CCSL");
            }));
  //          Navigator.of(context).pushNamed('/second');
          },
          tooltip: 'Increment',
          child: Icon(Icons.add),
        ),
      );
    }
  }
  