Фон средствами CSS

<style>

#rec1045999981 .tn-elem[data-elem-id="1623740564755"] .tn-atom {   /*id вашего блока*/
   

width: 200%;
height: 200%;
  z-index: 0;
  pointer-events: none;
  animation: moveBlobs 60s infinite alternate ease-in-out;
  background: 
    radial-gradient(circle at 20% 30%, #e94a6c 0%, transparent 40%),
    radial-gradient(circle at 70% 40%, #cf2a51 0%, transparent 50%),
    radial-gradient(circle at 50% 70%, #b12043 0%, transparent 60%),
    radial-gradient(circle at 80% 80%, #f4c16c 0%, transparent 50%),
    radial-gradient(circle at 30% 80%, #fae0a3 0%, transparent 60%);
  background-blend-mode: soft-light;
  background-repeat: no-repeat;
  background-size: cover;
  filter: blur(80px);
  transform: translate(-25%, -25%);

}

.bg-blobs {
  position: fixed;
  top: 0;
  left: 0;
  width: 200%;
  height: 200%;
  pointer-events: none;
  z-index: -1;
  animation: moveBlobs 10s infinite alternate ease-in-out;
  background: 
    radial-gradient(circle at 20% 30%, #e94a6c 0%, transparent 40%),
    radial-gradient(circle at 70% 40%, #cf2a51 0%, transparent 50%),
    radial-gradient(circle at 50% 70%, #b12043 0%, transparent 60%),
    radial-gradient(circle at 80% 80%, #f4c16c 0%, transparent 50%),
    radial-gradient(circle at 30% 80%, #fae0a3 0%, transparent 60%);
  background-blend-mode: soft-light;
  background-repeat: no-repeat;
  background-size: cover;
  filter: blur(80px);
  transform: translate(-25%, -25%);
}

@keyframes moveBlobs {
  0% {
    transform: translate(-25%, -25%) scale(1);
    filter: blur(80px);
  }
  50% {
    transform: translate(-20%, -30%) scale(1.05);
    filter: blur(100px);
  }
  100% {
    transform: translate(-30%, -20%) scale(1.1);
    filter: blur(80px);
  }
}
</style>