User blog comment:Rupert Giles/Layout Changes: Breakpoints and Typography/@comment-24416108-20150518203353/@comment-5108618-20150518221603

Hey guys, I'll try and answer these questions here! The font size and line height are changing to focus on readability. To explain a bit more, a series of best practices have evolved that indicate a range of words and characters per line that deliver the best results. For most users, more content on the page is actually harder to consume rather than easier. In order for on-screen text to have both the best speed and comprehension possible, these changes were made.