[Julien Pham]

What I did with this eBook in fact is instead of putting chapter-new for new chapters, I have put <h1>\2</h1> as replacement string, then I have let Calibre uses h1 to find new chapters.

Then I have edited the ePub with Calibre, and I have added in the stylesheet :
h1 {
text-align: right;
border-bottom: medium groove;
}

This way the h1 is right centered and with an horizontal line.

I have to check some things again to fine tune this, but it looks good so far.

Oh btw I noticed we can convert to AZW3 (as I have a Kindle, this format is good) and Calibre can edit AZW3 files as well. (Sigil cannot)

Something fun though is that the personal document thing of Amazon does not accept AZW3 files, though this is the Kindle format now. I can send to my personal document only mobi files ^^