Yeah iOS is becoming the new IE. No matter how much people complain about google's chrome domination they at least try to keep up with the standards. iOS browser does not and they even lock the devices to their browser so you can't even choose a browser with a different engine
this isn't an iOS issue. That blog post is broken on Firefox Android as well, and in Chrome dev tools. There is a display inline-block messing it up. The newer blog posts display fine.