Number of columns
Width of the gutter. If you would like to use a large gutter width (60px and up) then using fewer columns is recommended.
Set the maximum width. The size is in pixels. If however you would like your maximum width to be 100% then simply enter 0.
Set the desktop width
Set the tablet width (landscape)
Set the tablet width (portrait)
Set the mobile width (landscape)
Set the mobile width (portrait)