Figure 1: The floating banner is currently visible at all times. This needs to change in the future, as we want it to show only when having scrolled down on the page.

Figure 2: The floating banner sticks to the top of the page when scrolling down.

Figure 3: Demonstration of a current styling issue with the dropdown button.

Figure 4: No styling issues before the user have scrolled down on the page (before it starts floating).

Figure 5: The regular green banner that appears after editing the diff view is unaffected by the new banner.