1 CASE 1, original layer tree
7 "contentsOpaque": true,
13 "position": [100, 100],
15 "contentsOpaque": true,
17 "backgroundColor": "#0000FF"
30 CASE 2, hovering over the outer div
36 "contentsOpaque": true,
42 "position": [100, 100],
44 "contentsOpaque": true,
46 "backgroundColor": "#0000FF"
62 CASE 3, hovering over the inner div
68 "contentsOpaque": true,
74 "position": [100, 100],
76 "contentsOpaque": true,
78 "backgroundColor": "#0000FF"