Should we add a button in the toc component to be able toggle the navigation ?

[ggrossetie]

I'm working on a stylesheet factory that's compatible with a semantic HTML5 output.
One popular request is to be able to create an off-canvas Table Of Contents with a button to toggle it.

I think it will be easier to style the <button> if we put it outside the <nav> ?

<button aria-expanded="false">Table Of Contents</button>
<nav id="navigation">
  <ul>
    <li><a href="#section-1">Section 1</a></li>
    <li><a href="#section-2">Section 2</a></li>
    <li><a href="#section-3">Section 3</a></li>
    <li><a href="#section-4">Section 4</a></li>
  </ul>
</nav>

What do you think ?