Style is an important concept in the AxKit world. Much of the value that AxKit adds as an XML publishing and application server lies in the flexibility and ease with which documents can be associated with one or more sets of transformations that can be selected dynamically in response to a condition. From more common web-publishing tasks , such as vendor co-branding and user customization, to more advanced dynamic data-oriented applications, the key to developing clean, manageable sites with AxKit lies in learning how to apply the appropriate styles to the content to meet the specific need. In this chapter, I introduce AxKit's basic styling configuration options and show how these options can be combined to create sophisticated, responsive sites.