You can add a border in a Google Docs page using a workaround, since there's no built-in border tool for doing this ...
You can add a font to Google Docs within the program or by downloading a free add-on. Here's how to do it.
To hide or remove borders in Google Sheets and Docs, you must open the document, select the preferred table, then choose the relevant options to delete the borders. Hide table borders in Google Sheet ...