typing.css

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

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

.typing-cursor, .typing-cursor-black, .typing-cursor-white {
  opacity: 1;
  font-weight: bold;
  -webkit-animation: blink 0.7s infinite;
  animation: blink 0.7s infinite;
}

.typing-cursor, .typing-cursor-black {
  color: #000;
}

.typing-cursor-white {
  color: #fff;
}