.spinner-container{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);z-index:9999}.spinner{width:40px;height:40px;border:4px solid #f3f3f3;border-top:4px solid #3498db;border-radius:50%;animation:spin 1.5s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}