_example_11.dart

***add a Listview****

body: ListView(
              children: <Widget>[
                Card(
                  margin: EdgeInsets.all(8),
                  child: Column(
                    children: <Widget>[
                      Image.asset('assets/dtw.png'),
                      Padding(
                        padding: const EdgeInsets.all(8),
                      ),
                      Text('Detroit Tech Watch')
                    ],
                  ),
                ),
              ],
            )));