// key frames animation 
.zoom-in-zoom-out {
 animation: zoom-in-zoom-out 2s ease-out infinite;
}
  
  @keyframes zoom-in-zoom-out {
    0% {
      transform: scale(1, 1);
    }
    50% {
      transform: scale(1.5, 1.5);
    }
    100% {
      transform: scale(1, 1);
    }
  }