.white {
  height: 100vh;
}
.white::before {
  z-index: 1;
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 60vh;
  background-image: linear-gradient(-180deg, #FFFFFF 0%, rgba(255,255,255,0.00) 100%);
}
.white::after {
  z-index: 1;
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 20vh;
  background-image: linear-gradient(0deg, #EBEBEB 0%, rgba(235,235,235,0.00) 100%);
}

.squares {
  height: 100%;
  display: flex;
  justify-content: space-around;
  overflow: hidden;
}
.square {
  animation: squares 9.5s linear infinite;
  align-self: flex-end;
  width: 1em;
  height: 1em;
  transform: translateY(100%);
  background: #ebebeb;
}
.square:nth-child(2) {
  height: 1.5em;
  width: 3em;
  animation-delay: 1s;
  animation-duration: 17s;
  -webkit-filter: blur(5px);
}
.square:nth-child(3) {
  height: 2em;
  width: 1em;
  animation-delay: 1.5s;
  animation-duration: 8s;
  -webkit-filter: blur(0px);
}
.square:nth-child(4) {
  height: 1em;
  width: 1.5em;
  animation-delay: 0.5s;
  -webkit-filter: blur(3px);
  animation-duration: 13s;
}
.square:nth-child(5) {
  height: 1.25em;
  width: 2em;
  animation-delay: 4s;
  -webkit-filter: blur(2px);
  animation-duration: 11s;
}
.square:nth-child(6) {
  height: 2.5em;
  width: 2em;
  animation-delay: 2s;
  -webkit-filter: blur(1px);
  animation-duration: 9s;
}
.square:nth-child(7) {
  height: 5em;
  width: 2em;
  -webkit-filter: blur(2.5px);
  animation-duration: 12s;
}
.square:nth-child(8) {
  height: 1em;
  width: 3em;
  animation-delay: 5s;
  -webkit-filter: blur(6px);
  animation-duration: 18s;
}
.square:nth-child(9) {
  height: 3em;
  width: 2.4em;
  animation-delay: 6s;
  -webkit-filter: blur(0.5px);
  animation-duration: 12s;
}

@keyframes squares {
  from { transform: translateY(100%) rotate(-50deg); }
  to   { transform: translateY(calc(-100vh + -100%)) rotate(20deg); }
}