.background-img{
    z-index: -9999;
    filter: grayscale(1);
    opacity: 2%;
    object-fit: cover;
}

.circles{
  z-index: -9999;
}

.circles li{
  position: absolute;
  display: block;
  list-style: none;
  width: 20px;
  height: 20px;
  background: rgba(255, 255, 255, 0.2);
  animation: animate 25s linear infinite;
  bottom: -150px;
  
}

.circles li:nth-child(1){
  left: 25%;
  width: 80px;
  height: 80px;
  animation-delay: 0s;
}


.circles li:nth-child(2){
  left: 10%;
  width: 20px;
  height: 20px;
  animation-delay: 2s;
  animation-duration: 12s;
}

.circles li:nth-child(3){
  left: 70%;
  width: 20px;
  height: 20px;
  animation-delay: 4s;
}

.circles li:nth-child(4){
  left: 40%;
  width: 60px;
  height: 60px;
  animation-delay: 0s;
  animation-duration: 18s;
}

.circles li:nth-child(5){
  left: 65%;
  width: 20px;
  height: 20px;
  animation-delay: 0s;
}

.circles li:nth-child(6){
  left: 75%;
  width: 110px;
  height: 110px;
  animation-delay: 3s;
}

.circles li:nth-child(7){
  left: 35%;
  width: 150px;
  height: 150px;
  animation-delay: 7s;
}

.circles li:nth-child(8){
  left: 50%;
  width: 25px;
  height: 25px;
  animation-delay: 15s;
  animation-duration: 45s;
}

.circles li:nth-child(9){
  left: 20%;
  width: 15px;
  height: 15px;
  animation-delay: 2s;
  animation-duration: 35s;
}

.circles li:nth-child(10){
  left: 85%;
  width: 150px;
  height: 150px;
  animation-delay: 0s;
  animation-duration: 11s;
}



@keyframes animate {

  0%{
      transform: translateY(0) rotate(0deg);
      opacity: 1;
      border-radius: 0;
  }

  100%{
      transform: translateY(-1000px) rotate(720deg);
      opacity: 0;
      border-radius: 50%;
  }

}