.wrapper {
  height: 400%;
  width: 100%;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  position: absolute;
  background: linear-gradient(to bottom right, #242424 0%, #1f1f1f 100%);
  background-size: 100% 1800%;

  -webkit-animation: rainbow 60s ease infinite;
  -z-animation: rainbow 60s ease infinite;
  -o-animation: rainbow 60s ease infinite;
  animation: rainbow 60s ease infinite;
}

@-webkit-keyframes rainbow {
  0% {
    background-position: 0% 82%;
  }
  50% {
    background-position: 100% 19%;
  }
  100% {
    background-position: 0% 82%;
  }
}
@-moz-keyframes rainbow {
  0% {
    background-position: 0% 82%;
  }
  50% {
    background-position: 100% 19%;
  }
  100% {
    background-position: 0% 82%;
  }
}
@-o-keyframes rainbow {
  0% {
    background-position: 0% 82%;
  }
  50% {
    background-position: 100% 19%;
  }
  100% {
    background-position: 0% 82%;
  }
}
@keyframes rainbow {
  0% {
    background-position: 0% 82%;
  }
  50% {
    background-position: 100% 19%;
  }
  100% {
    background-position: 0% 82%;
  }
}

.wrapper3 {
  height: 400%;
  width: 100%;
  position: absolute;
  background-size: 100% 100%;
  background: linear-gradient(to bottom right, #7e7e81 0%, #110f13 100%);

  background-color: #1d001b;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100%25' height='100%25' viewBox='0 0 800 400'%3E%3Cdefs%3E%3CradialGradient id='a' cx='396' cy='281' r='514' gradientUnits='userSpaceOnUse'%3E%3Cstop offset='0' stop-color='%2300B7DD'/%3E%3Cstop offset='1' stop-color='%231D001B'/%3E%3C/radialGradient%3E%3ClinearGradient id='b' gradientUnits='userSpaceOnUse' x1='400' y1='148' x2='400' y2='333'%3E%3Cstop offset='0' stop-color='%2304BBFF' stop-opacity='0'/%3E%3Cstop offset='1' stop-color='%2304BBFF' stop-opacity='0.5'/%3E%3C/linearGradient%3E%3C/defs%3E%3Crect fill='url(%23a)' width='800' height='400'/%3E%3Cg fill-opacity='0.4'%3E%3Ccircle fill='url(%23b)' cx='267.5' cy='61' r='300'/%3E%3Ccircle fill='url(%23b)' cx='532.5' cy='61' r='300'/%3E%3Ccircle fill='url(%23b)' cx='400' cy='30' r='300'/%3E%3C/g%3E%3C/svg%3E");
  background-attachment: fixed;
  background-size: cover;
}