Common Styles are styles common to all the components in the site. You can set them individually, just as with all styles, but you can expect to find them in all the different components.
|The Body style is used to format the background of the page.|
The Heading Style is used to format the page Heading.
The Navigation Route styles are used to format the navigation route - a set of links that can appear at the top of a page showing the location of the page in the site.
The Base Font style is used to format the text on page.