.mouse {
  font-size: 0.9rem;
  width: 2em;
  height: 3em;
  border: 0.3em solid #fff;
  border-radius: 1em;
}
.mouse::after {
  content: '';
  display: block;
  width: 0.3em;
  height: 0.5em;
  margin-left: 0.55em;
  margin-top: 0.5em;
  background-color: #fff;
  background-image: url(../../img/mouse.png);
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  border-radius: 0.15em;
  animation-name: movement;
  animation-duration: 1s;
  animation-iteration-count: infinite;
  animation-direction: normal;
  animation-play-state: running;
}
.mouse:hover::after {
  animation-play-state: paused;
}

@keyframes movement {
  0% {
    margin-top: 0.5em;
    opacity: 1;
  }
  50% {
    opacity: 1;
  }
  100% {
    margin-top: 1.5em;
    opacity: 0;
  }
}