The quick styles gallery can be opened by following these steps:

Select the text that you want to format in a new way.

For example, perhaps you want the words Business Fact to always appear as a bold, red Heading 1 in your document.

On the Mini toolbar that appears above your selection, click Heading 1, Bold, and Red to format the text.

With the formatted text selected, click the More More down arrow arrow in the lower-right corner of the Styles gallery, and then click Create a Style.

The Create New Style from Formatting dialog box appears.

Give the style a name—for example, Business Fact—and then click OK. The style that you created appears in the Styles gallery with the name that you gave it, ready for you to apply whenever you type the words Business Fact, or whenever you want to format any text as bold, red, and Heading 1.