Почему css3 animation не работает на IE11?

Question

[Y23]

.icon {
width: 191px;
height: 198px;
background-image: url(../images/icon.png);
-webkit-animation: sprite 1.6s steps(125) infinite;
animation: sprite 1.6s steps(125) infinite;
}

@-webkit-keyframes sprite {
0% {
background-position: 23875px 0;
background-position: -23875px 0; } }
@keyframes sprite {
0% {
background-position: 23875px 0;
background-position: -23875px 0; } }