.container {
  display: flex;
  width: fit-content;
  margin: 100px auto;
}

.box {
  position: relative;

  height: 80px;
  padding: 0 7px;
}

.dot {
  width: 20px;
  aspect-ratio: 1 / 1;
  background: black;
  border-radius: 50%;
  animation: move 2s cubic-bezier(0.445, 0.05, 0.55, 0.95) infinite;
}

.dot-reverse {
  position: absolute;
  bottom: 0;
  width: 20px;
  aspect-ratio: 1 / 1;
  background: black;
  border-radius: 50%;
  animation: move-reverse 2s cubic-bezier(0.445, 0.05, 0.55, 0.95) infinite;
}

@keyframes move {
  0% {
  }

  50% {
    scale: 1.2;
  }

  100% {
    translate: 0 60px;
  }
}

@keyframes move-reverse {
  0% {
  }

  50% {
    opacity: 0;
    scale: 0.5;
  }

  100% {
    translate: 0 -60px;
  }
}

.dot-2,
.dot-reverse-2 {
  animation-delay: 0.3s;
}

.dot-3,
.dot-reverse-3 {
  animation-delay: 0.6s;
}

.dot-4,
.dot-reverse-4 {
  animation-delay: 0.9s;
}

.dot-5,
.dot-reverse-5 {
  animation-delay: 1.2s;
}

.dot-6,
.dot-reverse-6 {
  animation-delay: 1.5s;
}

.dot-7,
.dot-reverse-7 {
  animation-delay: 1.8s;
}