[SOLVED] Can't Change Font Size or Any Style of Comment "Reply Title"

I have combed through the recent forum discussions and although the following (closed) post from Jan 2011 answers my question, it unfortunately doesn't effect the change.

http://forum.bytesforall.com/showthr...ht=reply-title

I'm using the referenced code below in the "Add HTML/CSS Inserts" of the Atahualpa options:
#respond h3#reply-title {font-size:10px;}


With Firebug I can see that the containing DIV is called "respond" and the h3 is called "reply-title" so the above should work.

As I'm using WordPress 3.5.1 (latest) and Atahualpa 3.7.9, has something changed that makes the above referenced css ineffective?

Any pointers in the direction of where I haven't dug around yet would be much appreciated.