@keyframes blink {  
  0% { color: red; }
  100% { color: black; }
}
@-webkit-keyframes blink {
  0% { color: red; }
  100% { color: black; }
}
.blink {
  -webkit-animation: blink 1s linear infinite;
  -moz-animation: blink 1s linear infinite;
  animation: blink 1s linear infinite;
}