Thanks for your fast reply, and for your "Welcome" too
I read about similar problems here, and that
>> - right click on the html document(s) and select link stylesheet
was what I tried ... without any effect.
>> The next step - which I use most of the time - is to reorganize those resources into a standard file
You mean "Tools -> Restructure Epub to Sigil norm"?
That's what I tried too ... without any effect.
I read here in the forum that similar things happened to some people who updated their Sigil version ... my previous version must have been 0.9.x or so, and the stylesheet was working in the preview ...
Some people wrote about some changes in the epub structure since Sigil 1.x or so ... it must have to do with this, but I have no idea how to solve this ...
Best wishes, Frank