I linked to this amazing article by Ethan Marcotte before on Twitter, but it’s worth mentioning here again. We don’t just browse the web from our desktop or laptop anymore, we use portable devices with screen sizes and pixel densities that change the way we have to design. If you want to be prepared for what’s coming (and it’s coming fast), I recommend you read this article, start using the techniques Ethan describes, and don’t look back.