Webkit animation is leaving junk pixels behind on the screen
The solution box-shadow: 0 0 1px rgba(0, 0, 0, 0.05); You can use the background colour of your box as the box-shadow colour if you feel this is too noticeable. Alternatively, according to this answer on a similar issue in Chrome (thanks to Sebastian in the comments for the tip-off), you may want to try: … Read more