Max Widths
The max-widths module contains both a ten-step scale based on powers of two as well as the ability to constrain element widths to a maximum of 100%.
Max widths can be combined with widths to ensure that your content doesn’t get too wide on larger monitors. Max-widths can also help keep embedded media within the canvas. As they are fluid across ranges of screen widths, max-widths are extremely useful when trying to keep a design responsive.
Class name structure is as follows:
Base: mw = width Modifiers 1 = 1st step in width scale 2 = 2nd step in width scale 3 = 3rd step in width scale 4 = 4th step in width scale 5 = 5th step in width scale 6 = 6th step in width scale 7 = 7th step in width scale 8 = 8th step in width scale 9 = 9th step in width scale -100 = literal value % -none = none Media Query Extensions: -ns = not-small -m = medium -l = large