If ther Ribbon taking up too much screen space than you can temporarily turn it off. Doing this will get you back plenty of screen, as you can see in the screenshot below.
To hide the Ribbon or to make it disappear and reappear.
- You can either press Ctrl-F1 (and press Ctrl-F1 again to make the Ribbon reappear) or
- Just right-click anywhere in the Ribbon and select “Minimize the Ribbon.”
Don’t worry the Ribbon will still be available when you want it:
To make reappear, You need to do is click on the appropriate tab (Home, Insert, Page Layout, etc.) and it appears. It then discreetly goes away when you are no longer using it.