Board Thread:Support Requests - Getting Technical/@comment-28197354-20181001035642

Not sure if i'm explaining it right but i have both a navbox and an infobox on this page, and what seems to have happened is the two have merged somehow. When i go into preview edit, not source, the entire page is highlighted when i scroll rather than just the area i have my mouse on. When I click, it gives me the text "Horse Header,Infobox breed". Not sure how to fix this, or if i've just made like an extremely noobish mistake in my coding. Any help would be appreciated. 