I recently discovered that font-variant: small-caps; does not work in epubs used in Kobo Libra2
Now I have also noticed that quotes are a bit temperamental.
For example, when a character reads a printed document verbatim, it is usually displayed with wider margins, and maybe italicized. I tried replicating this with the following using <p class="quote"></p>
But the Libra2 completely ignored that and the quoted text just looked like the rest of the page.
The Libra2 expects
<blockquote></blockquote>, then it displayed as quoted text.