#preloader{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#ffffff;z-index:9999;display:flex;justify-content:center;align-items:center}.tennis-ball{width:100px;height:100px;background-image:url('https://restauranttc.ch/wp-content/uploads/2024/12/网球-tuya.webp');background-size:cover;background-position:center;border-radius:50%;animation:spin 2s linear infinite}@keyframes spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}