anchor.diff:              )
             : new DefaultTextStyle(
                 style: DefaultTextStyle.of(context).merge(cardLabelStyle).merge(_textStyle).copyWith(
  -                fontSize: _varyFontSizes ? _cardModels.length.toDouble() : null
  +                fontSize: _varyFontSizes ? 5.0 + index : null
                 ),
                 child: new Column(
                   children: <Widget>[
  
positive.code:   static const String _sunshineURL = "http://www.walltor.com/images/wallpaper/good-morning-sunshine-58540.jpg";
  
    static const double kCardMargins = 8.0;
  
    final TextStyle backgroundTextStyle =
      Typography.white.title.copyWith(textAlign: TextAlign.center);
  
negative.code:   }
  
    double _fixedSizeToSnapOffset(double scrollOffset) {
      int cardIndex = (scrollOffset.clamp(0.0, kFixedCardHeight * (_cardModels.length - 1)) / kFixedCardHeight).floor();
      return cardIndex * kFixedCardHeight + kFixedCardHeight * 0.5;
    }
  
    double _toSnapOffset(double scrollOffset, Size containerSize) {
  