Sometimes, putting a border around text will work better in your document than inserting a text box or a one-cell table, to achieve a similar look.
Select a word, line, or paragraph.
Go to Home > Borders and then open the menu of border choices.
Choose the type of border you want:
Customize the border
After you've selected your text and found the basic type of border you'd like, open the Borders menu again, and choose Borders and Shading.
Make your choices for style, color, and width, and then apply the choice with the buttons in the Preview section of the dialog box. When the preview is the way you want it, select OK.
Note
Make sure that the Apply to box has the correct setting: Text or Paragraph.