#container,body{overflow:hidden}*{margin:0;padding:0;position:relative}body{display:flex;justify-content:center;align-items:center;background-color:#f50;height:100vh;width:100vw}#container{animation:5s ease-in-out infinite bounce}img{display:none;position:absolute;top:0;left:0;width:100%}img[id$=traits]{width:500%}@keyframes bounce{0%,100%{transform:translateY(-5%)}50%{transform:translateY(5%)}}