#typing {
  border-right: 2px solid black; /* the cursor */
  padding-right: 2px;
  font-weight: normal; /* adjust as needed */
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 50%, 100% { border-color: black; }
  25%, 75% { border-color: transparent; }
}