User blog comment:Hotsoup.6891/Best Practices: Mobile Friendly Main Pages/@comment-25663991-20150223223818

Why are you actively avoiding CSS and JS? I really think using a combination of media queries and mobile stylesheets to streamline desktop elements would be easier, as in many cases it means the desktop view isn't even changed.

Also, there is a problem on some wikis where empty infobox rows are displaying on mobile because the desktop version uses CSS to hide them.