[Shadowman123]

Again thank you all.

I have tried notepad++ and I think I found a way:

- Tweak epub
- open CSS with notepad++
- open one of the "document files" with notepad++
(this gives me two tabs and I can find the correct CSS-class)
- change CSS values (and save)
- open document file with Firefox
- repeat and refresh as necessary.

I know it's not the best but it works.

BTW I found out that there is a Plug-in for notepad++ called CSS-eXplorer that might do
what I'm looking for. The plug-in is not working at the moment but I'll keep checking.

And yes Agama: keeping it within calibre is what I like.

Sorry GRiker: I took so long writing my post that I missed yours. But I guess that shows that I'm on the right track. Thank you