Thanks, that made it much easier to drill down.  Specifically there is<p><pre><code>    @media (max-width: 701px) { ... }
    @media (min-width: 700px) and (max-width: 1100px) { ... }
</code></pre>
And that toggles the visibility of some classes.  I didn&#x27;t realize CSS3 supported that sort of logic.  Guess I shouldn&#x27;t have been surprised given the Turing Completeness proof...