.Flock { z-index: 5000; position: relative; top: 5rem; left: 10rem; width: 20rem; height: 20rem; pointer-events: none; } .Bird { z-index: 50; /* Above Tile (5,10), Road (12), Corner (20) */ position: absolute; background-size: 1200% auto; background-repeat: no-repeat; }