Hi there Jonnyali Are you trying to add a new entry to the "CSS classes" list in the "Framework & CSS" options for the plugin? Or are you just trying to restyle an existing one? Oh, and please could you show us your skin's description.yaml file and the CSS code you've added that is not working.

The only thing the "pickable_css_class_names" settings do is pre-populate the list of CSS class names that you can pick in the "Framework & CSS" options. They won't appear on your site until an administrator goes into the "Framework & CSS" options for a plugin and selects them, and an administrator has a free text field to enter whatever CSS class names they like, so setting them up is strictly optional. Anyway, I could be wrong, but I think I see what your issue is. Let's say there's a plugin (e.g. a menu plugin) that has a default look-and feel. In the original skin it might be styled using rules such as .zenario_menu__default_style ul li { ... } You want to make a new pickable style, so you create a new class name called top_menu_custom. When picked, this replaces zenario_menu__default_style with top_menu_custom, and the old style rules no longer match. CSS doesn't let you extend style rules in this way. You have two things you can do to work around this:

• If you don't want to use the default styles, then remove your top_menu_custom class name and just add style rules to the original zenario_menu__default_style class name.
• If you want to use the default styles, and have your new styles as an extra option, then you'll have to either style your new class from scratch, or make a copy of all of the rules but change the class name from zenario_menu__default_style to top_menu_custom in the code you copy.