section { position: relative; }
section > *:not(.deco-orb){ position: relative; z-index: 1; }
.deco-orb{
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  filter: drop-shadow(0 16px 32px rgba(10,30,60,.12));
}
@media (max-width: 1100px){
  .deco-orb{ filter: drop-shadow(0 12px 24px rgba(10,30,60,.10)); }
}