body { margin: 0; min-height: 100vh; display: grid; place-items: center; background: #111; color: #fff; font-family: system-ui, sans-serif; text-align: center; }
img { width: 96px; border-radius: 20px; }
button { font-size: 18px; padding: 14px 28px; border: 0; border-radius: 12px; background: #4f8cff; color: #fff; }
.help { margin-top: 16px; color: #aaa; }