Your browser does not support grid, so will not be supported. Hover over your browser version to see if there is a way to enable potential support. Sorry, I am no longer able to justify working on making the layout work on older devices.
TN: This is a joke or pun on how the numbers are alternately pronounced in Japanese. 3 can be pronounced as "sa", 10 is "to" and 8 is "yachi," and of course you add 10 8 to get 18.