The Golden Grid System, or GGS, is a folding grid for responsive design. It splits the screen into 18 even columns. The leftmost and rightmost columns are used as the outer margins of the grid, which leaves 16 columns for use in design. Now, the 16 columns sound 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 eight columns for tablet-sized screens, and into 4 columns for mobile-sized ones. This way GGS can easily cover any screen sizes from 240 up to 2560 pixels.