Reviewing CSS helper class definitions
Save development time and bring greater consistency to the look and feel of your applications by being familiar with the standard Cascading Style Sheet (CSS) helper classes that are available for making minor changes to the behavior or styling of cells and layouts.
Open the skin of your application.
In the menu on the left of the Skin Preview screen, click Helper classes to display the list of all standard CSS helper classes and their definitions.
ArticleCSS helper classes