Grid System

Grid Structure

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
Class prefix .col- .col-sm- .col-md- .col-lg- .col-xl-
Number of columns 12
Gutter width 30px (15px on each side of a column)
Nestable Yes
Column ordering Yes

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 .row.

.col-lg-1
.col-lg-1
.col-lg-1
.col-lg-1
.col-lg-1
.col-lg-1
.col-lg-1
.col-lg-1
.col-lg-1
.col-lg-1
.col-lg-1
.col-lg-1
.col-lg-8
.col-lg-4
.col-lg-4
.col-lg-4
.col-lg-4
.col-lg-6
.col-lg-6

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.

.col-12 .col-xl-8
.col-6 .col-xl-4
.col-6 .col-xl-4
.col-6 .col-xl-4
.col-6 .col-xl-4
.col-6
.col-6

Mobile, Tablet, Desktop

Build on the previous example by creating even more dynamic and powerful layouts with tablet .col-md-* classes.

.col-12 .col-md-6 .col-lg-8
.col-6 .col-lg-4
.col-6 .col-md-4
.col-6 .col-md-4
.col-6 .col-md-4

Column Rapping

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.

.col-9
.col-4
Since 9 + 4 = 13 > 12, this 4-column-wide div gets wrapped onto a new line as one contiguous unit.
.col-6
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 .clearfix and our responsive utility classes.

.col-6 .col-md-3
.col-6 .col-md-3
.col-6 .col-md-3
.col-6 .col-md-3

Offsetting Column

For giving the offset use m*-*-auto. For example, mx-md-auto will ajust itself automatically as much as possible.

.col-lg-4
.col-lg-4 .mx-md-auto
.col-lg-3 .mx-md-auto
.col-lg-3 .mx-md-auto
.col-lg-6 .mx-md-auto

Nesting Column

To nest your content with the default grid, add a new .row and 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).

Level 1: .col-md-12
Level 2: .col-8 .col-md-6
Level 2: .col-4 .col-md-6

Column Ordering

Easily change the order of our built-in grid columns with .order-md-* modifier classes.

.col-lg-9 .order-md-2
.col-lg-3 .order-md-1