.preloader{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(4, 38, 73, 1);display:flex;justify-content:center;align-items:center;z-index:9999;opacity:1;transform:scale(1);transition:opacity 0.5s ease, transform 0.5s ease}.preloader.hidden{display:none}