Help with css on email digest for Office 365

I don’t control the way that the users access emails–I hope that many of them do use the web version rather than the client, but I don’t have access to that data.

Thanks for the response, it sounds like there is very little that I can do.

My dream would be that there was some very vanilla version of the digest email template that could work for all of the dodgy HTML/CSS engines out there.

Is there any chance of such a thing? I quite understand if not.