mixin GridOptionsDescription p&attributes(attributes) While Bootstrap uses code .col- | , code .col-sm- | , code .col-md- | , code .col-lg- | and code .col-xl- | , we introduced a new breakpoint, code .col-xxl- | for the massive screen size. mixin GridTable .table-responsive table.table.table-bordered.table-striped.mb-0 thead tr th th.text-center | Extra small br small <576px th.text-center | Small br small ≥576px th.text-center | Medium br small ≥768px th.text-center | Large br small ≥992px th.text-center | Extra large br small ≥1200px th.text-center | Massive br small ≥1400px tbody tr th.text-nowrap(scope='row') Max container width td None (auto) td 540px td 720px td 960px td 1140px td 1320px tr th.text-nowrap(scope='row') Class prefix td code .col- td code .col-sm- td code .col-md- td code .col-lg- td code .col-xl- td code .col-xxl- tr th.text-nowrap(scope='row') # of columns td(colspan='6') 12 tr th.text-nowrap(scope='row') Gutter width td(colspan='6') 30px (15px on each side of a column) tr th.text-nowrap(scope='row') Nestable td(colspan='6') Yes tr th.text-nowrap(scope='row') Column ordering td(colspan='6') Yes