Board Thread:Support Requests - Designing Your Wikia/@comment-24042083-20140924082913/@comment-4902411-20140924132123

I apologize for not being clearer. Walls refers to threads, such as these. To be clearer, when you preview a thread or a reply. And, you are not using an !important to add weight to the statement. The wikiaThrobber class itself has the background set to the 3-bar throbber, so you must use an !important. And, you should be using background-image, instead of content. It would take effect even without an !important addition.

I myself found the classes using Inspect Element, and the elements do appear for me.