@keyframes moveUp {
  0% {
    top: 0;
  }
  100% {
    top: -100%;
  }
}
@keyframes moveDown {
  0% {
    top: -100%;
  }
  100% {
    top: 0;
  }
}
.banner_moveUp {
  animation-name: moveUp;
  animation-duration: 2s;
  animation-timing-function: linear;
  animation-iteration-count: 1;
  animation-fill-mode: forwards;
}
.banner_moveDown {
  animation-name: moveDown;
  animation-duration: 2s;
  animation-timing-function: linear;
  animation-iteration-count: 1;
  animation-fill-mode: forwards;
}