jeff-downloader/public/stylesheets/background.css

/* https://codepen.io/mohaiman/pen/MQqMyo */

*{
  margin: 0px;
  padding: 0px;
}

body{
  font-family: 'Exo', sans-serif;
}


.context {
  width: 100%;
  position: absolute;
  top:50vh;

}

.context h1{
  text-align: center;
  color: #fff;
  font-size: 50px;
}


.area{
  background: rgb(59,44,207);
  background: -webkit-linear-gradient(90deg, rgba(59,44,207,1) 0%, rgba(140,41,151,1) 100%);
  width: 100%;
  height:100vh;


}

.circles{
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.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%;
  }

}