body{font:18px/1.5 system-ui,sans-serif;margin:4rem auto;padding:0 1rem;max-width:46rem;background:#f6f7fb;color:#172337}button{padding:1rem 1.4rem;font:inherit;border:2px solid #184aa0;border-radius:.75rem;background:#fff;color:#173267}button:disabled{opacity:.7}#result{padding:.75rem;background:#e4f1e9;border-radius:.5rem}