body{font-family:sans-serif;background:#2e2e2e;color:#fff;text-align:center;padding:30px}.desc{text-align:center;font-size:16px;color:#fff;margin-bottom:20px;line-height:1.5;background-color:#2d2d2d;padding:10px 20px;border-radius:8px;max-width:600px;margin-left:auto;margin-right:auto;box-shadow:0 0 10px #ffd70033}.container{max-width:600px;margin:auto;background:#444;padding:20px;border-radius:10px}#bingo-card{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin:20px auto}.cell{background:#eee;color:#333;padding:20px;font-size:20px;font-weight:700;border-radius:5px;cursor:pointer}.cell.marked{background:#4caf50;color:#fff}#draw-number{padding:10px 20px;font-size:18px;margin-top:20px;cursor:pointer}#called-number{margin-top:15px;font-size:24px;font-weight:700}.cell.winner{background:gold!important;color:#000;border:2px solid #fff}.win-message{margin-top:20px;font-size:26px;color:gold;font-weight:700;animation:pulse 1s infinite}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.1)}to{transform:scale(1)}}