To enhance the appearance of the text in a paragraph, you can quickly add a border and shading to selected text. When you add a border, you can specify what sides you want to include or exclude. For example, you can add a border on just the top and the bottom and leave the sides open. Shading colors the background behind the selected text or paragraph. If you want to customize borders and shading by changing line style, color, and width preferences, you can make changes in the Borders and Shading dialog box.
Select the paragraph text you want to format.
Click the Home tab.
Click the Borders and Shading ...