Thanks, I was able to log in and to finally understand the issue.
It seems that your archive uses special containers since it's meant to be a masonry type archive rather than the standard archive that wordpress themes would use.
What you may end up needing to do to fix this is to use the standardised method that your theme uses to display the archive. This means you will need to use the same html tags.
On the author pages all I really want to do is display text and a list of posts in a simple bullet point list. No need for anything fancy, masonry grids or anything.
I haven’t had issues on other pages only thing I can think is due to the multiple views?
I think I am following you in your saying I should be using the article tags you highlighted as that’s what my theme uses but there isn’t any need to on this page as I don’t need anything that fancy. Just need to ensure it doesn’t break out the white container. Well and also solve the content length issue where the footer overlaps.
Cheers for any help you can provide, this issue is driving me crazy! Ha.