anchor.diff:      /// Generate <div class="card"></div>
       let card (options: GenericOption list) children =
           let opts = genericParse options
  -        let classes = Helpers.classes Classes.Container [opts.CustomClass] []
  +        let classes = Helpers.classes Classes.Container (opts.CustomClass::opts.Modifiers) []
           div (classes::opts.Props) children
   
       /// Generate <div class="card-header"></div>
       let header (options: GenericOption list) children =
           let opts = genericParse options
  -        let classes = Helpers.classes Classes.Header.Container [opts.CustomClass] []
  +        let classes = Helpers.classes Classes.Header.Container (opts.CustomClass::opts.Modifiers) []
           header (classes::opts.Props) children
   
       /// Generate <div class="card-content"></div>
       let content (options: GenericOption list) children =
           let opts = genericParse options
  -        let classes = Helpers.classes Classes.Content [opts.CustomClass] []
  +        let classes = Helpers.classes Classes.Content (opts.CustomClass::opts.Modifiers) []
           div (classes::opts.Props) children
   
       /// Generate <div class="card-footer"></div>
       let footer (options: GenericOption list) children =
           let opts = genericParse options
  -        let classes = Helpers.classes Classes.Footer.Container [opts.CustomClass] []
  +        let classes = Helpers.classes Classes.Footer.Container (opts.CustomClass::opts.Modifiers) []
           footer (classes::opts.Props) children
   
       module Header =
  
positive.code:                 | Title.IsCentered -> { result with IsCentered = true }
                  | Title.Props props -> { result with Props = props }
                  | Title.CustomClass customClass -> { result with CustomClass = customClass |> Some }
  
              let opts = options |> List.fold parseOption Title.Options.Empty
              let classes = Helpers.classes
                              Classes.Header.Title.Container
                              [ opts.CustomClass ]
                              [ Classes.Header.Title.IsCentered, opts.IsCentered ]
  
              p (classes::opts.Props) children
  
negative.code:                 | IsCentered
                  | Props of IHTMLProp list
                  | CustomClass of string
                  | Modifiers of IModifier list
  
              type internal Options =
                  { IsCentered : bool
                    Props : IHTMLProp list
                    CustomClass : string option
                    Modifiers : string option list }
                  static member Empty =
                      { IsCentered = false
                        Props = []
                        CustomClass = None
                        Modifiers = [] }
  
          /// Generate <a class="card-header-icon"></a>
          let icon (options: GenericOption list) children =
              let opts = genericParse options
              let classes = Helpers.classes Classes.Header.Icon (opts.CustomClass::opts.Modifiers) []
              a (classes::opts.Props) children
  
          /// Generate <p class="card-header-title"></p>
  