Here you need to specify the number of grid-columns in @grid-columns and gutter width in @grid-gutter-width under Grid system.
Specify the container width by reducing gutter space in @container-large-desktop under Container sizes.
If total width of our container is 1200px and gutter width is 30, then specify @container-large-desktop as 1200-30 = 1170px as container width field.
If you need you can specify remaining fields also. download the file and include css and js into your website files.