Having a solid understanding of the CSS foundation in DNN will help to speed up the process of building and troubleshooting for DNN websites. The following are common CSS selectors that can be used in module and skin development.
||use as wrapper to allow form elements to inherit from jQuery CSS scope
||similar to a table row, .dnnFormItem allows to separate a row of form items. It is often being used to wrap a label and a input (or label and group of inputs)
||float elements to the left
||float elements to the right
||clear fix for floating elements
||used to display button as a primary action (used with hyperlink by itself or within a list item)
||display a link as secondary action