body{font-family:system-ui,sans-serif;max-width:640px;margin:3rem auto;padding:0 1rem;color:#222}
h1{color:#06c}
a{color:#06c}
code{background:#f4f4f4;padding:2px 6px;border-radius:3px}
.box{border:1px solid #ddd;border-radius:6px;padding:1rem;margin:1rem 0;background:#fafafa}