Quick Styles are sets of styles created to work together. Although a Quick Style set likely contains all of the styles that you need to build a document, you may want to add a brand new style. You can also create additional styles, such as a new table or list style.
Select the text that you want to create as a new style.
For example, perhaps you want the word business always to appear as bold and red in your document.
On the Mini toolbar that appears above your selection, click Bold and Red to format the text.
Right-click the selection, point to Styles, and then click Save Selection as a New Quick Style.
Give the style a name — for example, business — and then click OK.
The business style that you created appears in the Quick Styles gallery with the name you gave it, ready for you to use whenever you want text to be bold and red.