body {
  height: 100vh;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #222;
}
svg {
  fill: #cad;
  max-width: 60vmin;
}

#solBacak,
#sagBacak{
  animation: bacaklar 0.4s infinite steps(2);
}

#sagBacak{
  animation-delay: -0.2s;
}

@keyframes bacaklar {
  to {
    transform: translateY(-10%);
  }
}