body: new Container(
margin: const EdgeInsets.only(left: 20.0, right: 20.0),
child : Center(
- // Center is a layout widget. It takes a single child and positions it
- // in the middle of the parent.
child: Column(
- // Column is also a layout widget. It takes a list of children and
- // arranges them vertically. By default, it sizes itself to fit its
- // children horizontally, and tries to be as tall as its parent.
- //
- // Invoke "debug painting" (press "p" in the console, choose the
- // "Toggle Debug Paint" action from the Flutter Inspector in Android
- // Studio, or the "Toggle Debug Paint" command in Visual Studio Code)
- // to see the wireframe for each widget.
- //
- // Column has various properties to control how it sizes itself and
- // how it positions its children. Here we use mainAxisAlignment to
- // center the children vertically; the main axis here is the vertical
- // axis because Columns are vertical (the cross axis would be
- // horizontal).
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[