Sure you can. Even without javascript. If you really wanted to, you could even make it work in IE 5, in a single request (I think). I we're discussing whether

Sure you can. Even without javascript. If you really wanted to, you could even make it work in IE 5, in a single request (I think). I we're discussing whether is reasonable - 9/10 slow pages I have encountered are slow because of "content" they push on you and would add even more garbage if they could get away with it. Of the rest - most were the opposite of engineered. Tiny minority that can't be bothered to optimize - I don't mind. You mention sites with sprites, but I would really like to see an example of a sites that are slow on HTTP<2 for good reasons, i.e. not 90% of data being ads, trackers, popups, auto-playing videos and generating content via multi-MB javascript libraries, because that's how it's done these days.