This is a system that was developed to make designing easier and faster. It uses CSS code to control the html elements. With the set column widths, there is less randomness in design, requiring less math, less decisions, and more accuracy.

The 15 column grid is divided into portions that are 60 pixels wide. Each column has 10 pixels of margin on the left and right, which create 20 pixel wide gutters between columns and a 10 pixel column on either side of the page's body.