As the number and variety of devices from which we access the internet increases, new web design challenges present themselves.It’s no longer simply enough to have a mobile version and a browser version. Now, we have to consider whether the person visiting our site is visiting from a tablet, a smartphone (and whether that smartphone has a high-res screen or not), a netbook, a desktop computer or full-size laptop (and whether it’s one with a high-res or low-res screen), or some other device entirely.