Mea Culpa - - - - - - I made a very simple mistake - and then failed to see my introduced error. <oops>
I had deleted a closing brace on an element just before the entries I was working on. Of course this made the file beyond that point just useless text.
Sometimes taking a break to step away - - - and or a quick check with a CSS validation tool
Helps you see the obvious.
Many thanks for the response - and for creating this very useful addition to Joomla.