When I output an InDesign CS6 document as an epub, it seems that the CSS that gets generated for any given paragraph will contain specs that reflect that paragraph's indents and space below (margin-bottom, margin-left, and margin-right)--but not space above, or margin-top in CSS. Is this something that can be changed as an export option, no matter what the reasoning was in not including space-above as a default export option?
And as a related question, are CSS outputs customizable in other ways? Can I get the output to not place the overrides for what I take to be semantic tags (body, div, dl, dt, dd, etc.) at the top of the CSS? I mean, is it feasible to allow the individual paragraph styles control all spacing and indents? Maybe this is a ridiculous question: I have LOTS of experience with InDesign, not so much with HTML!
The "space above" problem is solved if you apply the 8.0.1 update to InDesign CS6.
You can create a separate CSS file which you can "attach" in the EPUB Export dialog box, which "zeros out" values which InDesign may include in its CSS file. Any additional CSS file can override items in the InDesign-generated CSS.