The combination of font and font size largely determines the look of your document. You can easily set both of these elements for all or part of your content with just a few clicks. Font and font size affect the selected character or characters.
Change the Font
Select the text whose font you want to change.
On the Home tab, click the Font list down arrow.
Click the font you want to use.
Change the Font Size
Select the text whose font size you want to change.
On the Home tab, do any of the following:
Click the Font Size down arrow, and select a font size from the drop-down list that appears.
Click the Font Size list, and type the font size you want.
Click the Grow Font button or the Shrink Font button to increase or decrease the font size.