Figure 1: The floating banner is completely invisible on a 27" screen size at the top of the page. Also, there are no longer extra space between the grey (centered) buttons and the diffs.

Figure 2: The floating banner is still invisible when the user has scrolled down to the start of the first diff file.

Figure 3: the floating banner stretches all the way to the right of the browser view. Also, the dropdown button is now placed to the right of the white box containing the diff files.

Figure 4: This is how the floating banner looks in the DOM at Figure 3.