Extra Small - 379px and Smaller (col-xs)
Container Width: auto
Column Width: auto
Gutter: 30px (15px on each side)
Class Prefix: col-xs-*
*Use ONLY 3-12 column widths adding to 12 columns.
Medium Small - 480px to 767px
Container Width: auto
Column Width: auto
Gutter: 30px (15px on each side)
Class Prefix: col-ms-*
*Use ONLY 2-12 column widths adding to 12 columns.
Small - 768px to 991px
Container Width: 750px
Column Width: 60px
Gutter: 30px (15px on each side)
Class Prefix: col-sm-*
Medium - 992px to 1199px
Container Width: 970px
Column Width: 78px
Gutter: 30px (15px on each side)
Class Prefix: col-md-*
Large - 1200px and Larger
Container Width: 1170px
Column Width: 95px
Gutter: 30px (15px on each side)
Class Prefix: col-lg-*
*Use 1-12 column widths adding to 12 columns.