ton" style="position:absolute;top:1rem;left:1rem;padding:0.4em 0.8em;cursor:pointer;border-radius:0.25em;background-color:#0074d9;color:#ffffff;border:none">toggle sidebar</button><style>
    nav.hidden {
      display: none;
    }
  </style><script>
    document
      .getElementById("nav-toggle-button")
      .addEventListener("click", () => {
        document.querySelector("body > div > nav").classList.toggle("hidden");
      });
  </script></div></body></html>