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Comment by akcreek | Hacker News Reader

Why a 10 column grid? 12 makes much more sense to me since it is divisible by 2, 3, 4 and 6 while 10 is only divisible by 2 and 5. 12 gives more options with hardly any additional styles.

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This reminds me of the duodecimal system:

http://www.youtube.com/watch?v=U6xJfP7-HCc

Mathematically, 10 is a pretty arbitrary choice to base your number system on. We would have been better off learning base 12 than inventing metric.

You can also divide 10 by 2, 4 and 5 without getting infinitly long numerical expressions. In fact 12 is quite a waste, it's better to go with 6 because it has 2 and 3 as prime factors, thus also being friendly towards divisions over 4. On the other hand base 6 numbers are longer than base 10 numbers, so you need a lot of digits.

In fact some googling reveals than the choice is not arbitrary: http://math.stackexchange.com/questions/8734/why-have-we-cho...

BTW: this discussion is quite off-topic. The choice for the number system base is quite different from the choice for the number of columns for a CSS grid.

Honestly, it was a choice I made late in the night. I think I'm going to rework it now to be 12 columns.

Please do. There's a very good reason nearly every framework goes with 12 cols these days.

Yup, that's a really weird choice. The most common layouts are the ones with 3 or 4 equal sized columns, and I just don't see how one would use this grid to do that?

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