Yes, thank you for looking at it! It turned out to be the page break tag at the bottom of the style sheet. Someone working on the site had changed it to “break-all” because hyperlinks in the sources section weren’t breaking and causing the problem. After the tags were changed back to “keep-all,” and I changed the way sources were cited, it resolved.
Thanks again for checking it out! Next time I’ll remember come back and note the solution.