class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(primarySwatch: Colors.blue),
      home: Scaffold(
        body: SafeArea(
          child: Text('Hi'),
        ),
        bottomNavigationBar: Container(
          height: 60,
          color: Colors.black12,
          child: InkWell(
            onTap: () => print('tap on close'),
            child: Padding(
              padding: EdgeInsets.only(top: 8.0),
              child: Column(
                children: [
                  Icon(
                    Icons.close,
                    color: Theme.of(context).accentColor,
                  ),
                  Text('close'),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }
}