Ryan, the best way to do it when you are learning about Kentico's CSS Classes is to drop the control on the page. Load your page in Mozilla Firefox, have the Firebug add-on installed. Enable the add-on and start selecting the objects on the screen. You will see their specific CSS on the right. You can also change the CSS to get an idea of how it will change the look and feel of the control. Once you have what you want, create the class in your CSS Stylesheet (best for global changes) or on the webpart itself within Kentico, then assign the class to the webpart in its properties or surround with class div's.