.scroll
{
  color: #000;
  font family: monospace;
  overflow: hidden;
  border-right: .15em solid orange;
  white-space: nowrap;
  margin: 0 auto;
  letter-spacing: .15em;
  animation: 
    typing 3.5s steps(30, end),
    blink-caret .5s step-end infinite;
}

@keyframes typing {
  from { width: 0 }
  to { width: 100% }
}