.image-container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  width: 100vw;
}

img {
  max-width: 400px;
  height: auto;
  transition: 1s;
  animation: wiggle 3s infinite;
}

@keyframes wiggle{
  0% {
    transform: rotate(0deg);
  }
  40% {
    transform: rotate(20deg);
  }
  50% {
    transform: rotate(0deg) ;
  }
  80% {
    transform: rotate(-20deg);
  }
  100% {
    transform: rotate(0deg);
  }
}