If you click on the group arrow 
in the bottom right corner of the ribbon tab Home | group Paragraph to open the dialog box, you will see that the Paragraph tab contains a button labeled Character. You can use this button to change the character formatting (font, text styles, etc.) for whole paragraphs.
This is especially useful for styles. For more information, see Paragraph styles.
To change the character formatting of whole paragraphs, select the desired paragraphs and click on the Character button in the dialog box. The program will display another dialog box, which resembles that of the ribbon tab Home | group Character. For more information, see Character formatting.