#spinner{position:fixed;top:0;left:0;right:0;bottom:0;z-index:999;display:flex;justify-content:center;align-items:center;background-color:rgb(0 0 0 / 0.3)}#spinner[hidden]{display:none}#spinner::after{content:"";width:8rem;height:8rem;border:2px solid #f3f3f3;border-top:3px solid #5a5a5a;border-radius:100%;will-change:transform;animation:spin 1s infinite linear}@keyframes spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}