message: Add aria-label to sidebar navigations menus
diff: <span class="logo-text">Rome</span>
  </a>
  </div>
  - <nav class="menu">
  + <nav aria-label="site" class="menu">
  <ul>
  <li>
  <a href="#">Item 1</a>
  </li>
  <ul>
  </nav>
  - <div class="table-of-contents">
  + <nav aria-label="page" class="table-of-contents">
  <div class="toc-container">
  {{ content | toc(tags=['h1', 'h2'], wrapperClass='fixed toc') | safe }}
  </div>
  - </div>
  + </nav>
  <div class="mode-switch-container">
  <button id="mode-switch" class="mode-switch">
  Dark Mode
  