This article shows you how to hide the sidebar in the editor
If you're working on a laptop screen real estate tends to be a limited resource. This is why you can hide the right-hand side menu bar if required.
To do so you have 2 options.
You can right-click your editor window and then select Hide sidebar.
To get it back you simply have to right-click your editor window again and than select Show sidebar.
Alternatively, you can also use the keyboard shortcut Ctrl+B on Windows devices or CMD + B on Macs.