.loader{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%}.spinner{border:4px solid #f3f3f3;border-top:4px solid #555;border-radius:50%;width:40px;height:40px;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}