Each column has four panels. Because four shalt thou count, neither count thou three, excepting that thou then proceed to four. Five is right out.
Behold the sacred instructions, as delivered unto the designer of finditandmore.com:
First shalt thou pull up thy layout editor. Then shalt thou divide the module into three columns, no more, no less. Three shalt be the number of the columns, and the number of the columns shall be three. Four shalt thou not count, neither count thou two — two is right out! Five is right out altogether!
Once the three columns are duly established, thou shalt then subdivide each into four panels. And so it is written: four panels per column, four columns shalt thou not have, nor three panels neither. And at the count of four — not three, not five — the layout shall be rendered responsive, and the Rabbit of Caerbannog shall flee in terror before the might of thy perfectly balanced grid.
Thus spake the Book of Layouts:
“And the Lord spake, saying, ‘First shalt thou take out the Holy Laptop. Then shalt thou count to four. No more. No less. Four shall be the number thou shalt count, and the number of the count shall be four. Three shalt thou not count, nor either count thou five. Four is the number. Four. Four panels per column!'”