.block-ui{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,.5);z-index:1999;justify-content:center;align-items:center;flex-direction:column;color:white;text-align:center}.block-ui.active{display:flex}.spinner{border:8px solid #f3f3f3;border-top-color:#3498db;border-radius:50%;width:60px;height:60px;animation:spin 2s linear infinite}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}