anchor.diff:        result.add('${prefix}fontSize: $fontSize');
       if (fontWeight != null)
         result.add('${prefix}fontWeight: $fontWeight');
  +    if (fontStyle != null)
  +      result.add('${prefix}fontStyle: $fontStyle');
       if (textAlign != null)
         result.add('${prefix}textAlign: $textAlign');
       if (textBaseline != null)
  
positive.code:         FontWeight.w900: '900'
        }[fontWeight];
      }
      if (decoration != null) {
        cssStyle['text-decoration'] = _decorationToCSSString(decoration);
        if (decorationColor != null)
  
negative.code:   final String fontFamily;
    final double fontSize; // in pixels
    final FontWeight fontWeight;
    final FontStyle fontStyle;
    final TextAlign textAlign;
    final TextBaseline textBaseline;
    final double height; // multiple of fontSize
  