See how aspects of the Bootstrap grid system work across multiple devices with a handy table.
| Extra small <576px | Small ≥576px | Medium ≥768px | Large ≥992px | Extra large ≥1200px | |
|---|---|---|---|---|---|
| Grid behavior | Horizontal at all times | Collapsed to start, horizontal above breakpoints | |||
| Max container width | None (auto) | 540px | 720px | 960px | 1140px |
| Class prefix | .col- | .col-sm- | .col-md- | .col-lg- | .col-xl- |
| # of columns | 12 | ||||
| Gutter width | 20px (10px on each side of a column) | ||||
| Nestable | Yes | ||||
| Offsets | Yes | ||||
| Column ordering | Yes | ||||
Using a single set of .col-sm-* classes, you can create a basic grid system that starts out stacked on extra small devices before becoming horizontal on desktop (medium) devices.
Move columns to the right using .offset-md-* classes. These classes increase the left margin of a column by * columns. For example, .offset-md-4 moves .col-md-4 over four columns. With the move to flexbox in v4, you can use margin utilities like .mr-auto to force sibling columns away from one another.
To nest your content with the default grid, add a new .row and set of .col-sm-* columns within an existing .col-sm-* column. Nested rows should include a set of columns that add up to 12 or fewer (it is not required that you use all 12 available columns).
