[Quoth]

Originally Posted by jhowell

I believe that the question is actually about having a full page image with the the text flowing around it so that the previous page contains a full page of text.

See the thread Full-page image "floating" for responsive pagination.

Yes, I gathered that. But the simple reliable and works everywhere solution is to have the image as a paragraph where you want it in the sequential paragraphs. You don't know what size a page is, but you can make an image approximately fit the screen with css
height: auto;
width: 95%;
( or vice versa)
and the enclosing p tags are centred with 0 left & right but desired top and bottom margin. Easy & compatible. Things that are at the start of a new file need a padding-top as many platforms ignore margin-top for the first item in a file.

A "Full page" image and text flowing round it is a nonsense in an ebook. Though you can have float, it fails on many platforms, so we never have any "float" in any CSS. No drop caps, image or text based. Ebooks use CSS and HTML, but are not web pages or web sites.

Forget Desktop Publishing, which is what InDesign is derived from. Or Web site design.