html {
  margin:0;
  padding:0;
  box-sizing:border-box;
  font-size: 20px;
  background-color: black;
  color: green;
  font-family: monospace;
}

.sequence {
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.lines {
  transform: translateY(180px);
  transition: transform 1s;
  animation-name: slot-machine;
  animation-iteration-count: infinite;
  animation-timing-function: linear;
  animation-duration: 15s;
}

@keyframes slot-machine {
  1% {
    transform: translateY(-20px);
  }
}