Open the Word document
Go to the Design tab
Select Page Borders
Choose the border style, color, and width
Select the page border setting you want
Choose where to apply the border
Click OK
To add a border around text, select the text
Go to the Home tab
Click the Borders button in the Paragraph group
Choose the border option you want
To add a border to a table, select the table
Go to the Table Design tab
Click Borders
Choose the border style you want