anchor.diff:      /// Forces a page break right after the principal box. Breaking through all possible fragmentation contexts. So a break inside a multicol container, which was inside a page container would force a column and page break.
       | All
       /// Avoids any page break right after the principal box.
  -    | AvoidPage
  +    | [<CompiledName("avoid-page")>] AvoidPage
       /// Forces a page break right after the principal box.
       | Page
       /// Forces one or two page breaks right after the principal box, whichever will make the next page into a left page.
  
positive.code: [<StringEnum; RequireQualifiedAccess>]
  /// https://drafts.csswg.org/css-transforms-2/#propdef-backface-visibility
  type BackfaceVisibilityOptions =
      /// 
      | Visible
      /// 
      | Hidden
      
      /// Sets this property to its default value. Read more about [CSS Initial value](https://www.w3schools.com/CSSref/css_initial.asp)
  
negative.code:     /// For input elements where the type attribute is in the Search state, the element is rendered as a "normal" text entry widget, similar to an input element where the type attribute is in the Text state. For all other elements, this value has the same effect as auto.
      | Textfield
      /// For drop-down box select elements, the element is rendered as a drop-down box, including a "drop-down button", but not necessarily using a native control of the host operating system. For such elements, CSS properties such as color, background-color, and border (that can be disregarded for auto) should not be disregarded. For all other elements, this value has the same effect as auto.
      | [<CompiledName("menulist-button")>] MenulistButton
      /// These values exist for compatibility of content developed for earlier non standard versions of this property. They all have the same effect as auto.
      | [<CompiledName("compat-auto")>] CompatAuto
      
      /// Sets this property to its default value. Read more about [CSS Initial value](https://www.w3schools.com/CSSref/css_initial.asp)
      | Initial
  