There are 10 stylistic module class suffixeswhich provide a unique style variation to the module: title1-6and box1-4. The titlesuffixes can be combined with the boxsuffixes and the boxsuffixes can be combined with box-bevelsuffix. There are also box-basicand box-shadowsuffixes; and various additional structural suffixes, these affect the layout and metrics of the module.
Further more, you can also add FontAwesome icons into the Module Class Suffix. You will get a medium sized icon to the left of the title. Suffixes are in the icon-NAMEformat such as icon-star, as shown on the Typographypage.