The "right" location for a reply has traditionally been determined through human judgment. See https://hu.wikipedia.org/w/index.php?title=Szerkesztővita:Pasztilla&curid=258186&diff=22453105&oldid=22452319 on @Pasztilla's talk page:
The reply ended up inside the box (table), but it belongs outside. However, some editors use tables, div elements, etc., to create a decorative border or background color around the entire page, and in that case, comments belong inside the box. What should we do?