Designer Eric Portis goes over the many growing pains for the web and responsive images. There’s a lot code, a lot of math, and generally a lot of trouble. Note Eric’s proposed solution – a single img tag with both srcset and sizes attributes – doesn’t exactly look like what browser manufacturers fully agreed upon as of last month. But even with the slightly more verbose picture element, the srcset and sizes idea remains. I especially loved Eric’s illustrations on this post; they’re smart and funny.