Just a quick question, and apologies if this has already been asked:

I'm currently wrangling a very large .epub file in which there are no formal headers or chapter breakpoints, so I've spread the text across several smaller chunk .xhtml files for ease of editing. Once I've run the completed .epub through Calibre to convert it to .mobi format and uploaded the result onto my e-book reader, though, I find that (even though the absence of any h-numbered headings prevents the creation of a chapter marker), a pagebreak is still being inserted at the start of each new .xhtml file, disrupting what should be a continuous flow of text.

Possibly this is a problem I need to take to the Calibre forum, but on the chance I can fix it in Sigil first: is there some handy CSS code I can insert into my .epub file so ensure that text will "wrap" continuously between two .xhtml files, rather than page-breaking at the end of each file?