.typing {
    overflow: hidden;
    white-space: nowrap;
    border-right: 3px solid #000;
    width: 0;
    animation: typing 3s steps(15, end) forwards,
               blink 0.7s step-end infinite;
  }

  @keyframes typing {
    from { width: 0 }
    to { width: 15ch }
  }

  @keyframes blink {
    50% { border-color: transparent }
  }