I am using 3.9. When I navigate to a topic page or product page and try to enter certain classes into the source code (from the tools menu), the classes are removed once I click ok. For example, I will try to put <a class="someclass" href="#"></a> but it does not stay that way. Can someone tell me why this is? My solution is to create topic page templates but that is pretty time consuming and limited when I have to change certain things across the site. Any help would be appreciated.