Flicker color on div

flicker.css

.background-flicker {
    background-color: #FFF;
    animation: flicker 2s;
    -webkit-animation: flicker 2s;
    -moz-animation: flicker 2s;
    animation-iteration-count: infinite;
    -webkit-animation-iteration-count: infinite;
    -moz-animation-iteration-count: infinite
}

@keyframes flicker {
    0%, 100% {
        box-shadow: 0 0 10px #fff
    }
    50% {
        box-shadow: 0 0 50px #fff
    }
}
@-webkit-keyframes flicker {
    0%, 100% {
        -webkit-box-shadow: 0 0 10px #fff
    }
    50% {
        -webkit-box-shadow: 0 0 50px #fff
    }
}