That's not "real" xhtml. That's Microsoft's hybrid exported xml nonsense. I have no idea why the online epub reader has chosen to support it, but it's highly unlikely that many epub rendering devices/apps will. You need to export filtered html from Word if you want to have any hope of your code passing any epub validation, let alone work on a multitude of readers/apps.
Sigil doesn't give any errors when adding the file because the code is technically "well formed." That's all Sigil checks for. But that doesn't make it suitable for epub. Run the EpubCheck validator if you want to see all the epub-specific errors generated by your code.
Last edited by DiapDealer; 04-09-2019 at 01:02 PM.
|