.spinner-overlay{position:fixed;top:0;left:0;width:100%;height:100%;display:flex;justify-content:center;align-items:center;background:rgba(255,255,255,.7);z-index:9999}.spinner{border:4px solid rgba(0,0,0,.1);border-radius:50%;border-top:4px solid #3498db;width:40px;height:40px;animation:spin 2s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}