anchor.diff:          | BoxFlexGroup of float
           | ColumnCount of float
           | Cursor of string
  -        | Flex of U2<float, string>
  +        | Flex of obj
           | FlexGrow of float
           | FlexShrink of float
  -        | FontWeight of U2<float, string>
  +        | FontWeight of obj
           | LineClamp of float
  -        | LineHeight of U2<float, string>
  +        | LineHeight of obj
           | Opacity of float
           | Order of float
           | Orphans of float
           | Widows of float
           | ZIndex of float
           | Zoom of float
  -        | FontSize of U2<float, string>
  +        | FontSize of obj
           | FillOpacity of float
           | StrokeOpacity of float
           | StrokeWidth of float
  
positive.code:         | Manifest of string
          | MarginHeight of float
          | MarginWidth of float
          | Max of U2<float, string>
          | MaxLength of float
          | Media of string
          | MediaGroup of string
          | Method of string
          | Min of U2<float, string>
          | MinLength of float
          | Multiple of bool
          | Muted of bool
  
negative.code:         | XmlBase of string
          | XmlLang of string
          | XmlSpace of string
          | Y1 of obj
          | Y2 of obj
          | Y of obj
          interface IProp
  
      type CSSProp =
  