Initiating transitions on transform properties of all boxes, starting at different times and with different durations and values.

PASS --- [Expected] Property: -webkit-transform Target: box1 Elapsed Time: 0.5
PASS --- [Expected] Property: -webkit-transform Target: box2 Elapsed Time: 0.55
PASS --- [Expected] Property: -webkit-transform Target: box4 Elapsed Time: 0.4