* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  font-family: monospace;
  background-color: #000;
  color: white;
}

.line {
  display: flex;
  border-right-width: 2px;
  border-right-style: solid;
  border-right-color: rgba(255,255,255,.4);
  font-size: 1.5em;
  animation: cursorBlink 1000ms steps(40) infinite normal, typing 10000ms steps(100) normal 1 both;
  white-space: nowrap;
  max-width: 0vw; 
  overflow: hidden;
}

@keyframes cursorBlink {
  100% {
    border-right-color: transparent;
  }
}

@keyframes typing {
  100% {
    max-width: 100vw;
  }
}