To maximize your screen space in a Word document, you can minimize the ribbon so that only the tabs appear.
On the right side of the ribbon, click the upward-facing arrow .
After you minimize the ribbon, it will look like this:
To quickly go back and forth between a collapsed and expanded ribbon, double-click a tab on the ribbon (single-click a tab to expand the ribbon again). Or, press OPTION + +R to collapse the ribbon (pressing OPTION + +R again will expand the ribbon).
Expand the ribbon
To expand the ribbon, on the right side of the ribbon, click the downward-facing arrow .