By default, the ribbon in Microsoft Office is automatically displayed to the users. This tool is used to help users to easily find the commands required such as font adjustment, coloring, page layout and etc.
Some peoples may want to hide this functionality – Yes, you can do as following –
Right click on the Ribbon and select Minimize the Ribbon. Now, the Ribbon will be automatically minimize / hide – You need to click on the tab to see the Ribbon again.