html,body{height:100%;width:100%;overflow:hidden;margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}.card{display:flex;flex-wrap:nowrap;flex-direction:column;justify-content:center;align-items:center;height:100%;width:100%;gap:2px;min-width:100px}.heading{font-weight:700;text-align:center;font-size:20px;margin-top:-8px}.title{font-weight:600;text-align:center}.sub{color:#666;font-size:12px;line-height:1.4;text-align:center}.display-block{display:block}.spinner{width:18px;height:18px;border-radius:50%;border:2px solid #ddd;border-top-color:#86bc25;animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(prefers-color-scheme:dark){.sub{color:#e7e7e7}.heading,.title{color:#fff}.body{background-color:red}}