How do I make a textbox in Pressbooks?

Find the “Textboxes” menu in the visual editor and make your selection. This will insert an empty textbox into your post. Alternatively, you can highlight your text first, then choose the textbox style you need and see it appear with your text already inside.

For more information, check out our user guide: https://guide.pressbooks.com/chapter/tables-and-textboxes/