CSS3动画无法在IE浏览器上运行

Question

我一直试图找出我的CSS浏览器无法在IE浏览器上运行的问题。

.flash.flash-01 {
    animation: 8s ease 0s normal none infinite running first-flash;
    -moz-animation: 8s ease 0s normal none infinite running first-flash;
    -ms-animation: 8s ease 0s normal none infinite running first-flash;
    -webkit-animation: 8s ease 0s normal none infinite running first-flash;
    -o-animation: 8s ease 0s normal none infinite running first-flash;
    left: 220px;
    top: 360px;
}

@keyframes first-flash {
0%, 4%, 15%, 100% {
    opacity: 0;
}
100% {
    opacity: 1;
}
}
@keyframes first-flash {
0%, 4%, 15%, 100% {
    opacity: 0;
}
5% {
    opacity: 1;
}

链接：http://jsfiddle.net/cL2147f8/

感谢您的任何想法和帮助！