Not sure if someone has found a better solution? but I've resorted to using inline CSS and important tags

e.g.

<style type="text/css">
div#buttons_container div#vert_section_button { display: none !important; }
div#buttons_container div#hor_button_section div#stereo_buttons_container { display: none !important; }
div#buttons_container div#hor_button_section div#quality_buttons_container { display: none !important; }
div#buttons_container div#hor_button_section div#sound_on_button { display: none !important; }
div#buttons_container div#hor_button_section div#auto_rotate_on_button { display: none !important; }
div#buttons_container div#hor_button_section div#pause_button { display: none !important; }
div#buttons_container div#hor_button_section div#help_button { display: none !important; }
</style>