There's nothing to see here other than the Dunning-Kruger effect. Current responsive design practices are not perfect, but the author's conclusion (to target pl

There's nothing to see here other than the Dunning-Kruger effect. Current responsive design practices are not perfect, but the author's conclusion (to target platforms with user agent strings) is downright regressive. There are a multitude of well documented reasons that we moved away from this, and it's offensive that the author didn't bother to educate themselves properly before penning this. One thing that would help responsive design are breakpoints on elements, rather than the page itself. If my article preview component knows its own width, it can "break" accordingly into a better layout. While this is currently possible with JS, CSS support would greatly improve things (and enable the concept for non-js browsing experiences).