.blink {
  -webkit-animation: blink 1s ease infinite;
  animation: blink 1s ease infinite;
}

@-webkit-keyframes blink {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}

@keyframes blink {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}