body { font-family: Arial, sans-serif; margin: 0; padding: 0; background-color: #f4f7f6; }
main { max-width: 1200px; margin: 2rem auto; padding: 1rem; background: white; border-radius: 8px; box-shadow: 0 4px 6px rgba(0,0,0,0.1); }
label { display: block; margin: .5rem 0; }
code{ background:#f5f5f5; padding:.1rem .3rem; border-radius:3px }
pre{ background:#f7f7f7; padding:1rem }