@keyframes blink {  
    100% { color: red; }
    100% { color: black; }
}
@-webkit-keyframes blink {
    100% { color: red; }
    100% { color: black; }
}
.blink {
    -webkit-animation: blink 3s linear infinite;
    -moz-animation: blink 3s linear infinite;
    animation: blink 3s linear infinite;
}