Thanks all at Coffee Cup and Forum help
It's been a steep learning curve, but well worth the effort to part convert my static site to responsive with FF, couldn't have done it without you!
I have only been able to create 5 or so new responsive main pages, but the few hundred pages in my Knowledge Base will have to remain static for now. It's going to be a long slog to make them all responsive as I can't use Find/Replace in CC HTML editor to move a left index column to the top of a single main text column (content wise, not design). Find/Replace was great for changing links across hundred of pages to marry the new responsive and old static pages, and for someone who is not a web designer Foundation Framer is brilliant.https://www.silm.co.uk
Any feedback appreciated - there will be loads of howlers - but I think I've got a thick skin.