CSS or code to remove and/or center buttons?

I’d like to try to eliminate some of the option buttons on calendar views…possible?

Specifically, I’d like to delete the drop-down button to select month/agenda/week/etc view. I don’t need need to allow visitors to choose a view; Agenda on mobile, Month on desktop, and Posterboard on both is all I need. Can I eliminate this button everywhere?

I’d also like to delete the “duplicate” date selector button (there are date picker/previous/next buttons at the top AND bottom of each calendar view). Can I have just one, top or bottom? And can I center this button on the calendar?

Thank you!

The page I need help with: [log in to see the link]