Before we start talking about how we might treat mobiles differently in the world of the web, let’s answer the question - why should we treat them differently? It’s obvious that mobile devices typically have smaller screen sizes than “full” or “desktop” browsers, and that the screens can be rotated to switch between landscape/portrait modes a lot more often than with desktops and laptops, but what other factors can come into play, and how might they affect the way a site looks, feels, and performs? Even without optimisation, most sites will function fine to some degree on a mobile device...