@idolse - I said "some of them" as a qualifier because I didn't check all the styles to see which did/didn't appear.
Here is the original stylesheet that is inlined. The span.small-caps and span.largecap were the two that I initially noticed:
Here is an example paragraph before conversion from further down the doc:
Code:
<p class="first"><span class="largecap">W</span><span class="small-caps">hen all Siniava’s troops had surrendered</span>, Kieri Phelan’s troops assumed...
After conversion with an inline stylesheet the start of that paragraph looks like this:
Code:
<div class="center">
<p class="center1"><span>W</span><span>hen all Siniava’s troops had surrendered</span>, Kieri Phelan’s troops assumed...
With this stylesheet in the converted EPUB:
Note that it also affects how "well" the document is split etc in terms of chapter breaks. You end up with both lost styles and a document that needs a lot more manual cleanup work to get split as one chapter per file etc.
If instead I move all that css above into a separate .css file linked before importing, this is the result after conversion of that same paragraph:
Code:
<div class="letterbody">
<p class="first1"><span class="largecap">W</span><span class="small-caps">hen all Siniava’s troops had surrendered</span>, Kieri Phelan’s troops assumed...
With this now being the stylesheet (note the extra styles at the end):