Grid Options
  Extra small (<576px) Small (>=576px) Medium (>=768px) Large (>=992px) Extra Large (>=1200px)
Class prefix .col- .col-sm- .col-md- .col-lg- .col-xl-
Grid behaviour Horizontal at all times Collapsed to start, horizontal above breakpoints Collapsed to start, horizontal above breakpoints Collapsed to start, horizontal above breakpoints Collapsed to start, horizontal above breakpoints
Container width None (auto) 540px 720px 960px 1140px
Suitable for Portrait phones Landscape phones Tablets Laptops Laptops and Desktops
# of columns 12 12 12 12 12
Gutter width 30px (15px on each side of a column) 30px (15px on each side of a column) 30px (15px on each side of a column) 30px (15px on each side of a column) 30px (15px on each side of a column)
Nestable Yes Yes Yes Yes Yes
Offsets Yes Yes Yes Yes Yes
Column ordering Yes Yes Yes Yes Yes
Grid Example
col-lg-1 col-lg-1 col-lg-1 col-lg-1 col-lg-1 col-lg-1 col-lg-1 col-lg-1 col-lg-1 col-lg-1 col-lg-1 col-lg-1
 col-lg-4  col-lg-4  col-lg-4
col-lg-4 col-lg-8
col-lg-6 col-lg-6
col-lg-12