1. Select the text you want to format.

Tip: If you place your cursor in a paragraph, the style is applied to the whole paragraph. If you select specific text, only the selected text is formatted.

  1. On the Home tab, point to a style to preview it.

Apply styles options on the Word ribbon

If you don't see a style you want, click the More button More button to expand the gallery.

  1. Select a style.

Using Headings allows you to move parts of the document around by using View > Navigation Pane and then moving the listed headings up or down in the doc. Headings also can be used in creation of a table of contents. 

Note: If you need a different look, go to Design > Themes and select a new one. Each Theme has its own set of Styles.