anchor.diff:          | WrapMargin of obj
           | WrapOption of obj
           | WritingMode of obj
  -
  -    [<KeyValueList>]
  -    type IProp =
  -        interface end
  +        interface ICSSProp
           
       [<KeyValueList>]
       type IHTMLProp =
  
positive.code: open Fable.Import
  
  module Props =
      [<KeyValueList>]
      type CSSProp =
          | BoxFlex of float
  
negative.code:         | SrcSet of string
          | Start of float
          | Step of U2<float, string>
          | Style of ICSSProp list
          | Summary of string
          | TabIndex of float
          | Target of string
  