We use a 12 columns grid, with a max width of 1170px for the container.

Element Phones (<768px) (≥768px) (≥992px) (≥1200px)
Container width Auto 750px 970px 1170px
Number of columns 12 12 12 12
Column width Auto ~62px ~81px ~97px
Gutter width 30px 30px 30px 30px

For more information about the grid, please check bootstrap page (