.bug {
  position: absolute;
  pointer-events: none;
  z-index: 10;
  filter: drop-shadow(3px 3px 5px rgba(0, 0, 0, 0.35));
  transform-origin: center center;
}

.bug-inner {
  display: block;
  animation: bugLegs 160ms infinite alternate ease-in-out;
}

@keyframes bugLegs {
  from {
    transform: translateY(0px) rotate(-7deg);
  }
  to {
    transform: translateY(-6px) rotate(9deg);
  }
}