body {
  height: 100vh;
  width: 100vw;
  display: grid;
  place-items: center;
  background-color: #fafafa;
  width: 100vw;
  overflow: hidden;
}

#stage {
  text-align: center;
  max-height: 100vh;
  height: 90vh;
  width: 100vw;
  font-size: 3vw;
  display: flex;
  max-width: 70vw;
  margin: 0 auto;
  max-height: 100vh;
  flex-direction: row;
  place-items: middle;
  align-items: center;
}

.img {
  border-radius: 50%;
  min-height: 2em;
  min-width: 2em;
  background-size: cover;
  background-position: 50% 50%;
  mix-blend-mode: multiply;
  animation: spotappear 1.5s cubic-bezier(0.9, 0.3, 0.2, 1) forwards;
}
.img:nth-child(2) {
  animation-delay: -0.5s;
}
.img:nth-child(3) {
  animation-delay: -0.75s;
}
.img:nth-child(4) {
  animation-delay: -0.25s;
}

@keyframes spotappear {
  0% {
    opacity: 0;
  }
}
.img:before {
  content: "";
  float: left;
  padding-top: 100%;
  /* initial ratio of 1:1*/
}

.hide {
  position: absolute;
  z-index: -2;
  display: none;
}