<div id="showndecks" style="right: 336px; max-height: 758px; bottom: 99px; width: 198px;"></div> It's this element is the culprit. The reason for this is that even though the element is empty, it has /* border: 1px solid transparent; */ Which makes it 2px tall. Even when there's no decks Edit: On certain browsers, this display issue is exacerbated by how bordered divs appear. This is how it appears for me: This is how I know that the issue is a result of the above element: This took only 5 minutes of investigation after having not been experiencing the issue myself (my mouse rarely goes to that bottom right corner). However, scanning the mouse slowly over the area eventually replicated the issue, but it requires near pixel-perfect precision to display that div as it only appears on hover. Edit 2: Also, forgive my small text. When I select "Formatting > Normal Text" in this submission box, this text size IS normal text.