Demos: Menu appears twice in C-grade

[gabrielschulhof]

In C-grade, we get two copies of the menu - one from the list and one from the search. There's also some overlapping text as you narrow the screen.

It might be nice to do a C-grade pass over our demos.

[jaspermdegroot]

I suppose we can add display: none; to the menu content that we use for the search autocomplete and remove that with JS.

[jaspermdegroot]

I added this to the list of demos issues in #8245. Closing this ticket.