[AlexBell]

Originally Posted by odedta

Here is a template I always use for cover.html and it validates!

Thanks for your interest and your file. I wonder however whether we are talking past each other. I fully accept that files such as yours can be contained in an ebook which will validate with EPUB-Checker.exe. My interest is to get an HTML file which works as an SVG cover, and which validates to World Wide Web Consortium markup validation service.

I converted your file into an HTML file, and tested it with the W3C markup validation service at http://validator.w3.org/

The validation service gave the warning that there is no doctype, and tested it as an XHTML transitional file. It gave the same 12 errors that I described in a previous post.

I realise that my desire to find a way of doing an SVG cover with an individual HTML file which validates to W3C standards may be quixotic, but that's what I want to do.