body{margin:0;height:100vh;display:flex;justify-content:center;align-items:center;background:#020817;color:#fff;font-family:Arial}
.spinner{width:54px;height:54px;border:5px solid #444;border-top-color:#4da3ff;border-radius:50%;animation:s 1s linear infinite}
#loader,#fail{display:flex;flex-direction:column;align-items:center;gap:18px}
.hidden{display:none!important}
.icon{width:80px;height:80px;border-radius:50%;background:#ff4d4f;display:flex;align-items:center;justify-content:center;font-size:42px;font-weight:bold}
@keyframes s{to{transform:rotate(360deg)}}