This article explains how to add and remove a text border in Microsoft 365, Word 2019, Word 2016, and Word 2013.
Insert and remove page borders in Microsoft Word (PC and Mac)
There are many ways to draw attention to your important ideas in a Word document, including bullets or numbered lists, different fonts, and section headings. Another way is with text borders. If you insert a text border, you may later decide that your document looks better without it. If so, you can easily remove it.
Placing a border around a section of text in a Word document takes just a few seconds.
Open your document. Select Design on the ribbon.