anchor.diff:        child: new Container(
           height: kCardHeight,
           child: new Card(
  -          child: new Flex([
  -            new Flexible(
  -              child: new Stack([
  -                new Container(
  -                  decoration: demo.decoration,
  -                  child: new Container()
  -                ),
  -                new Container(
  -                  margin: const EdgeDims.all(24.0),
  -                  child: new Flex([
  -                      new Text(demo.name, style: demo.textTheme.title),
  -                      new Flexible(
  -                        child: new Text(demo.description, style: demo.textTheme.subhead)
  -                      )
  -                    ],
  -                    direction: FlexDirection.vertical,
  -                    alignItems: FlexAlignItems.start)
  -                )
  -              ])
  -            ),
  -          ], direction: FlexDirection.vertical)
  +          child: buildCardContents(demo)
           )
         )
       );
  
positive.code:     )
    ),
    // new SkyDemo(
    //   'Touch Demo', '../../rendering/touch_demo.dart', 'Simple example showing handling of touch events at a low level'),
    new SkyDemo(
      name: 'Minedigger Game',
  
negative.code: const EdgeDims kListPadding = const EdgeDims.all(4.0);
  
  class DemoList extends Component {
    Widget buildCardContents(SkyDemo demo) {
        return new Container(
          decoration: demo.decoration,
          child: new InkWell(
            child: new Container(
              margin: const EdgeDims.all(24.0),
              child: new Flex([
                new Text(demo.name, style: demo.textTheme.title),
                new Flexible(
                  child: new Text(demo.description, style: demo.textTheme.subhead)
                )
              ],
              direction: FlexDirection.vertical,
              alignItems: FlexAlignItems.start)
            )
          )
      );
    }
  
    Widget buildDemo(SkyDemo demo) {
      return new Listener(
        key: demo.name,
  