Login as admin or teacher. Create or navigate to a course with at least 10 grade items and 20 students. Go to Grades > Grader report. Make the window full screen (at least 768px wide). Ensure the gradebook table overflows the screen horizontally (add more grade items if necessary). Scroll all the way to the right. Confirm the help icon no longer covers the gradebook table. Resize the window between 568px and 768px wide. Confirm the help icon covers the gradebook table, and the average row is shown underneath the help icon. Sticky overall average (master only) Scroll vertically and horizontally and confirm that the overall average row is pinned (sticky) to the top of the sticky footer and always visible. Resize the window so the width is bellow 768px. Scroll vertically and confirm that the overall average row properly pinned and always visible regardless of the presence of the sticky footer.