There are 18 stylistic module class suffixes, these add a unique style variation to the module: box1-6 and title1-12; and 18 structural suffixes, these affect the layout and metrics of the module.
Enter any available suffixes at Extensions → Module Manager → Module → Module Class Suffix.
You can compound multiple suffixes together such as: box1 title3.
18 structural suffixes, these affect the layout and metrics of the module.
rounded, square, basic, standardcase, lowercase, uppercase, flush, flushtop, flushbottom, shadow2, shadow3, shadow4, shadow5, shadow6, shadow7, shadow8, shadow9, shadow10