Best Answer Danny , 11 April 2014 - 12:25 PM
What you're looking at there is version 3 of Bootstrap, both PageLines Framework and DMS use a heavily customized version of Bootstrap 2. So some of the things you see on the Bootstrap 3 docs won't be available in DMS unfortunately.
You can see all available utility classes here - http://docs.pageline...l-css-utilities
If you want to use those classes from Bootstrap 3, you can simply copy the CSS and add to your custom CSS: