Scroll bar arrows

[LarryB1607]

I cannot seem to find anything that works.  I would like to add the arrows to the top and bottom of the right side scrollbar.  I have tried several additions to the .config/GTK-3.0/gtk.css file but none of the suggested entries has done anything.  Any way to do this?  Thanks

example:
$ head ~/.config/gtk-3.0/gtk.css
*{
-GtkScrollbar-has-backward-stepper: 1;
-GtkScrollbar-has-forward-stepper: 1;
-GtkScrollbar-has-secondary-backward-stepper: 1;