.loading-overlay{background-color:rgba(0,0,0,.5)}.loading-overlay,.loading-overlay2{position:fixed;top:0;left:0;width:100%;height:100%;display:flex;justify-content:center;align-items:center;z-index:9999}.loading-overlay2{background-color:#fff}.loading-overlay3{background-color:rgba(0,0,0,.178)}.loading-overlay3,.loading-overlay4{position:fixed;top:0;left:0;width:100%;height:100%;display:flex;justify-content:center;align-items:center;z-index:9999}.loading-overlay4{background-color:#fff}.spinner{border:5px solid #f3f3f3;border-top-color:#3498db;border-radius:50%;width:50px;height:50px;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}