Bootstrap 4 grid systems enable you to create advanced layouts using rows and columns. The Bootstrap grid system can have up to 12 columns, and you can specify how these columns scale for different viewport sizes.
|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|
|Number of columns||12|
|Gutter width||30px (15px on each side of a column)|
Stacked to Horizontal
Using a single set of
.col-lg-*grid classes, you can create a basic grid system that starts out stacked on mobile devices and tablet devices (the extra small to small range) before becoming horizontal on desktop (medium) devices. Place grid columns in any
Mobile and Desktop
Don't want your columns to simply stack in smaller devices? Use the extra small and medium device grid classes by adding
.col-* .col-xl-*to your columns. See the example below for a better idea of how it all works.
Mobile, Tablet, Desktop
Build on the previous example by creating even more dynamic and powerful layouts with tablet
If more than 12 columns are placed within a single row, each group of extra columns will, as one unit, wrap onto a new line.
Since 9 + 4 = 13 > 12, this 4-column-wide div gets wrapped onto a new line as one contiguous unit.
Subsequent columns continue along the new line.
Responsive Column Resets
With the four tiers of grids available you're bound to run into issues where, at certain breakpoints, your columns don't clear quite right as one is taller than the other. To fix that, use a combination of a
.clearfixand our responsive utility classes.
For giving the offset use
m*-*-auto. For example,
mx-md-autowill ajust itself automatically as much as possible.
To nest your content with the default grid, add a new
.rowand set of
.col-md-*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).
Easily change the order of our built-in grid columns with