smooth blink css3

blink.css

@keyframes fade {
    from { opacity: 1.0; }
    50% { opacity: 0.5; }
    to { opacity: 1.0; }
}                                                                                                                                                                                                                                  

@-webkit-keyframes fade {
    from { opacity: 1.0; }
    50% { opacity: 0.5; }
    to { opacity: 1.0; }
}

.blink {
  animation:fade 1000ms infinite;
  -webkit-animation:fade 1000ms infinite;
}