There is a documentation error on the CSS reference guide available at https://docs.oracle.com/javase/8/javafx/api/javafx/scene/doc-files/cssref.html#pagination

The inner structure of the control is described as:

    page — StackPane
    pagination-control — StackPane
        leftArrowButton — Button
            leftArrow — StackPane
        rightArrowButton — Button
            rightArrow — StackPane
        bullet-button — ToggleButton
        number-button — ToogleButton
        page-information — Label

But there is no such things as leftArrowButton, leftArrow, rightArrowButton and rightArrow when exploring the control with SceneBuilder or Scenic view. And it does not match the usual spelling in use in JavaFX's CSS naming scheme for style classes.

It should be instead left-arrow-button, left-arrow, right-arrow-button and right-arrow which are the values currently in use in the code:

    page — StackPane
    pagination-control — StackPane
        left-arrow-button — Button
            left-arrow — StackPane
        right-arrow-button — Button
            right-arrow — StackPane
        bullet-button — ToggleButton
        number-button — ToogleButton
        page-information — Label