I can't get the global stylings for the rich text

Hey! I’m making a site for a client and I can’t seem to style the nested items. I saw a tutorial and it said to select the global element in the rich text field after I gave it a class. I can’t seem to find the global element to select after I give it a class so I can style the rich text section. There’s one for the body buy not for the rich text.

Click on a nested item first?