XS Grid Always Horizontal

col-4
col-4
col-4

SM Grid Collapsed at 576px - 767px

col-sm-4
col-sm-4
col-sm-4

MD Grid Collapsed at 768px - 991px

col-md-4
col-md-4
col-md-4

LG Grid Collapsed at 992px - 1199px

col-lg-4
col-lg-4
col-lg-4

XL Grid Collapsed at 1200px

col-xl-4
col-xl-4
col-xl-4