html,body{width:100%;height:100%;background:#000;overflow:hidden;display:flex;align-items:center;justify-content:center} #gc{display:block} #rot{display:none;position:fixed;inset:0;background:#000d1a;color:#fff; font-family:Arial,sans-serif;align-items:center;justify-content:center; flex-direction:column;gap:14px;z-index:9999;text-align:center} #rot.show{display:flex} #rot .icon{font-size:56px;animation:sp 2s linear infinite} @keyframes sp{to{transform:rotate(360deg)}}