You know those things we like to call an OS through names like Windows 7, Windows XP, Snow Leopard, Lion? Take a moment to think about what your use of the computer is at this very moment. Are you using it to create complicated graphs, charts, designs, coding? The million dollar answer is the average user uses a computer to get on the internet -that’s it! We’re all living in the “cloud” so to speak.
Either you love it or hate it, but the content-box model is here to stay. Good news though is that we designers can now change what the box model will do for us instead of us working for it. Box-sizing has received some attention and current CSS3 specs allow the box to be sized as we would like with our trusty old CSS style sheets.