More information is needed. As Charles has already pointed out, we are not sure what you are trying to accomplish.



Text boxes, by default, have a border all around. You can remove the border, but you can't choose to have just a bottom border, for example.

On the other hand, for an "ordinary" text paragraph you can add one, two, three or four border lines.

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Stefan Blom
Microsoft Word MVP

Microsoft 365 apps for business
Windows 11 Professional