One of the most popular ways to insert a text box using Google Docs' Drawing feature. With it, you create the text box, customize its appearance, and add it to your document to use like an image.

With the text box in progress, you can adjust the font of the text and the fill color or border of the box itself from the menu bar. How to add a textbox on Google Docs Jennifer Still/Business Insider ...

How to create text boxes from the Google Drawing app The Google Drawings app is a dedicated version of the integrated Drawing tool in Google Docs. It's handy if you're creating a more advanced ...

While you're writing in the box, a Format tab will appear in the top taskbar, which you can use to customize the box's text (font, character size, etc.) independently of the regular document's text.