.blink {
  animation:1s blinker linear infinite;
  -webkit-animation:1s blinker linear infinite;
  -moz-animation:1s blinker linear infinite;
  color: red;
  font-size:1.8em;
}
@-moz-keyframes blinker {  
  0% { opacity: 1.0; }
  50% { opacity: 0.0; }
  100% { opacity: 1.0; }
}

@-webkit-keyframes blinker {  
  0% { opacity: 1.0; }
  50% { opacity: 0.0; }
  100% { opacity: 1.0; }
}

@keyframes blinker {  
  0% { opacity: 1.0; }
  50% { opacity: 0.0; }
  100% { opacity: 1.0; }
}