@keyframes ident-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.ident-blink {
  animation: ident-blink 1s infinite;
  border: 2px solid red !important;
  border-radius: 50% !important;
  box-shadow: 0 0 6px red !important;
}