Style
With the alternative Style you can use your own style sheet (CSS).CSS class name
CSS class name enables for associating a CSS class name with a portlet. You can use this functionality if you need to use a different css than what is linked in on the website ( Additional HEAD elements or Insert custom css). The linked in class names must be defined on the website (Site properties - > Appearance -> css class name). If there are none set up on the website this alternative will not be available.If you would like to associate a portlet with a certain css class name, you click the button Choose. A new window will open with the available css class names already set up on the website.