### Summary On medium screens on the the "Compare" page, the sticky diff file headers get covered up because the header takes up more than one line. ### Steps to reproduce Click on repository, compare, and select two versions with more than a page length of diffs and scroll down till theres a sticky header. Then reduce the window width to about 900px and observe you can no longer see the file headers. ### What is the current *bug* behavior? Sticky file headers are not visible ### What is the expected *correct* behavior? Sticky file headers should be visible ### Relevant logs and/or screenshots  ### Possible fixes Two possible solutions come to mind: 1. Push the file headers down when the sticky header takes up two lines (Likely requires some messy javascript with a window resize listeners) 2. Make sure the header won't wrap lines onto the next line