I’ve found that you can add the following line in the header section of a page:
meta name=”viewport” content=”width=device-width, initial-scale=1.0″
(There needs to be angle brackets at each end)
and it becomes mobile-friendly. It’s a start, at least. This tip came from Google’s mobile-friendly site.
I’ve changed this blog to the “2016” theme to make it mobile-friendly.