how to change the layout of cards

[menglunyang]

this game is awesome, I learn a lot from this. but now I want change the layout of cards. For example, you set level one 4 * 2. I want change it to 2 * 2. I modified some of files, but it didn't change. the following is what I did. change _game.scss line 133-134

//$y : sqrt($tiles/2); //$x : $tiles/$y; $y : 2; $x : 2;

could you tell me how to do?