The reason is, that because every pixel is half the visual size, you may have to double the values of many CSS properties. For example text-shadow: 0 1px 0 #fff

The reason is, that because every pixel is half the visual size, you may have to double the values of many CSS properties. For example text-shadow: 0 1px 0 #fff; which is like a half visual pixel on the iPhone 4. If this is true, I'll be kind of pissed. I shouldn't need a special stylesheet for basic properties like border widths if the iPhone's browser is supposed to show the real web.