ScalablyTyped/community

hello, i want to display the demo of circular progress integration with using styleBuilder given in material ui demos, when i add val classes = styles1(js.undefined), it gives me blank pagen any suggestions`object DemoCircularIntegration {
case class Props()
//val classes = styles(js.undefined)
case class State(loading: Boolean = false, success: Boolean = false) {
def setLoading = copy(success = false, loading = true)

def setSuccess = copy(success = true, loading = false)

}

class Backend(t: BackendScope[Props, State]) {
var timer: js.UndefOr[js.timers.SetTimeoutHandle] = js.undefined

def unmount = Callback {
  timer.foreach(js.timers.clearTimeout)
  timer = js.undefined
}

def setSuccess = Callback {
  timer = js.timers.setTimeout(2000)(t.modState(_.setSuccess).runNow())
}

def handleButtonClick(loading: Boolean) = {
  (t.modState(_.setLoading) >> setSuccess).when(!loading) >> Callback.empty
}
val classes = styles1(js.undefined)

def render(props: Props, state: State): VdomElement = {
 // val css = props.style
 // val classes = css.styles
  //val buttonCss = if (state.success) css.buttonSuccess else css.common.emptyStyle


    <. div(
     <.  div(
          Mui.Fab.color(typings.materialUiCore.mod.PropTypes.Color.primary).onClick(_ => handleButtonClick(state.loading))(

            if (state.success) Muii.Check() else Muii.Save()
          ),
        HicpCircularProgress(size=68,className="fabProgress")().when(state.loading)
        ),
       div(
          HicpRaisedButton(touchTapCallback=_ =>handleButtonClick(state.loading), disabled=state.loading)


          ("Accept terms")
          ),
        HicpCircularProgress(size=24,className="buttonProgress")().when(state.loading)
        )

}

}`