.spinner-overlay{position:fixed;inset:0;display:flex;justify-content:center;align-items:center;background-color:rgba(0,0,0,.5);z-index:9999}.spinner{border:8px solid rgba(0,0,0,.1);border-left-color:#3498db;border-radius:50%;width:50px;height:50px;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}