*{color:#fff;background-color:#222;}div{position:fixed;left:50%;top:
50%;transform:translate(-50%,-50%);text-align:center;}img{width:
50vmin;vertical-align:middle;display:inline-block;animation-name:
spin;animation-duration:6283.18530718ms;animation-iteration-count:
infinite;animation-timing-function:linear;line-height:1em;}@keyframes
spin{from{transform:rotate(0deg);}to{transform:rotate(360deg);}}