If you take a look at the package.opf file, you'll see a line that reads:
Code:
<meta property="rendition:layout">pre-paginated</meta>
.
Add in that every page is it's own xhtml file and everything is wrapped in absolute location information.
If you send it to a Kobo ereader as a .kepub, it should render okay.
And I would suggest removing the download link since this book was copyrighted in 2015.
See screenshot of a random page.