cameronmoll:

Joni Korpi, who developed the system:

16 columns sounds a bit much for anything other than huge widescreen monitors. This is where the folding, inspired by the DIN paper system and Unigrid, comes in. The 16 columns can be combined, or folded, into 8 columns for tablet-sized screens, and into 4 columns for mobile-sized ones. This way Golden Grid System can easily cover any screen sizes from 240 up to 2560 pixels.

Click the three bars in the upper left to toggle the grid on and off. (This toggle switch is included for your use, too.)

/via @jcroft