#loader-backdrop{position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;display:none;justify-content:center;align-items:center;z-index:9999}.spinner{border:8px solid #f3f3f3;border-top:8px solid #3498db;border-radius:50%;width:60px;height:60px;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}