Flicker Pink

.btn-flicker-pink {
  display: inline-block;
  padding: 12px 28px;
  border: 2px solid #f472b6;
  border-radius: 10px;
  background: transparent;
  color: #f472b6;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  text-shadow: 0 0 10px rgba(244, 114, 182, 0.9);
  cursor: pointer;
  box-shadow: 0 0 14px rgba(244, 114, 182, 0.45), inset 0 0 10px rgba(244, 114, 182, 0.12);
}
.btn-flicker-pink:hover {
  animation: btn-flicker-pink-buzz 0.7s linear infinite;
}
@keyframes btn-flicker-pink-buzz {
  0%, 100% { opacity: 1; }
  8% { opacity: 0.6; }
  10% { opacity: 1; }
  38% { opacity: 1; }
  40% { opacity: 0.45; }
  42% { opacity: 1; }
  76% { opacity: 0.8; }
  78% { opacity: 1; }
}