anchor.diff:                        'images/header.jpg',
                         fit: BoxFit.cover,
                         height: _kFlexibleSpaceMaxHeight,
  -                    ),
  -                    // This gradient ensures that the toolbar icons are distinct
  -                    // against the background image.
  -                    const DecoratedBox(
  -                      decoration: const BoxDecoration(
  -                        gradient: const LinearGradient(
  -                          begin: Alignment.topCenter,
  -                          end: Alignment.bottomCenter,
  -                          stops: const [.7, 1.0],
  -                          colors: const <Color>[
  -                            const Color(0x00000000),
  -                            const Color(0x60FF5722)
  -                          ],
  -                        ),
  -                      ),
                       ),
                     ],
                   ),
  
positive.code:                 photo: post.imageUrl,
                ),
                new Container(
                  padding: const EdgeInsets.all(16.0),
                  child: buildTitle(post.title, const TextStyle(
                    fontFamily: "Lobster",
  
negative.code:               floating: false,
                expandedHeight: _kFlexibleSpaceMaxHeight,
                flexibleSpace: new FlexibleSpaceBar(
                  title: new Container(
                    padding: const EdgeInsets.symmetric(horizontal: 16.0),
                      child: buildTitle(_name, Theme
                      .of(context)
                      .textTheme
                      .title),
                  ),
                  background: new Stack(
                    fit: StackFit.expand,
                    children: <Widget>[
  