For people trying to find this for Bootstrap 3:
Full-width grids and layouts People who want to create completely fluid layouts (this means that your site stretches the entire width of the viewport) should wrap the contents of the grid in a containing element with filling: 0 15px; to offset the field: 0 -15px; used on .rows.
Source ( Grids and full-width layouts search)
Yannis dran
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