Portrait orientation in List Grid

I’m trying to create an image gallery using list view, but 3:4 (tall image) is not an option in the new apps. I’d like to move over from classic as most users prefer desktop, but I can’t until I figure this out.

Can anyone help with this?

3:4 is not an option, I’m not sure using CSS would solve that. I don’t know if they plan to bring it over to the new Glide Apps.