.loading-spinner{display:flex;justify-content:center;align-items:center;height:100vh}.spinner{border:4px solid rgba(0,0,0,.1);border-radius:50%;border-top:4px solid #3498db;width:40px;height:40px;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}