It's got a vertical carousel that offers no navigation between the two states, gives no indication it's even there ... exactly what I've come to expect from MS's approach to the web.
http://dev.modern.ie/
Empty cache load 340kB in 2.92s for me on FF 37.0.1. [403kB in 2.70s on Chrome 42.0.2311.90]
Edit: What surprises me a little is that neither of these resources gets a brilliant PageSpeed score. developer.mozilla.org doesn't minify all its javascript; dev.modern.ie apparently isn't compressing all its SVG nor specifying image dimensions. Would be interesting to read the rationale for these decisions (I assume on such big site there is one).
http://dev.modern.ie/ Empty cache load 340kB in 2.92s for me on FF 37.0.1. [403kB in 2.70s on Chrome 42.0.2311.90]
https://developer.mozilla.org/en-US/?icn=tabz Empty cache load 630kB in 2.65s for me. [714kB in 3.56s on Chrome]
Nice tools though.
Edit: What surprises me a little is that neither of these resources gets a brilliant PageSpeed score. developer.mozilla.org doesn't minify all its javascript; dev.modern.ie apparently isn't compressing all its SVG nor specifying image dimensions. Would be interesting to read the rationale for these decisions (I assume on such big site there is one).