First of all, thanks for producing Sigil; top-notch, *outstanding* piece of software that has SAVED my Pages-to-(epub to)-Kindle revision process.
Just wondering, when editing an already produced epub (e.g., exported from Pages or the like), I tried inserting a page split marker, and I get the line
<hr class="sigil_split_marker" />
Yet no CSS definition for it. No external file was created, no inline CSS was added to the xhtml file I added the line to, and no CSS was added to my externally linked stylesheet for this document (which happens to be ../Styles/book.css). As a side note, using the Create HTML Table of Contents command worked beautifully and *did* create a ../Styles/sgc-toc.css file with the appropriate styles.
Thanks for any help you can provide!