Using the pointer device move the cursor over the rects all the rects from left to right.
As the mouseover event triggers the 'O':s will become visible and marked in either green (a pass) or red (a fail).
Pass Criteria
The test has passed if after moving the cursor over all the rects:
all the 'O':s in the green rects have green fill
there are no red 'O':s visible
there are 9 green 'O':s in the first and second rect, 4 in the third rect and 6 in the fourth rect
