@keyframes spinner{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.loading-spinner{width:50px;height:50px;border:5px solid #f3f3f3;border-top-color:#007bff;border-radius:50%;animation:spinner 1s linear infinite}.spinner-container{display:flex;justify-content:center;align-items:center;position:fixed;z-index:999;left:0;top:0;width:100%;height:100%;overflow:auto;background-color:rgba(0,0,0,.8)}