Bootstrap Grid System Tutorial

Bootstrap’s grid system allows up to 12 columns across the page.

If you do not want to use all 12 columns individually, you can group the columns together to create wider columns:

col 1
col 1
col 1
col 1
col 1
col 1
col 1
col 1
col 1
col 1
col 1
col 1

col 2
col 2
col 2
col 2
col 2
col 2

col 3
col 3
col 3
col 3

col 4
col 4
col 4

col 6
col 6

col 12

Bootstrap’s grid system is responsive, and the columns will re-arrange automatically depending on the screen size.

Grid Classes

  • xs (for phones)
  • sm (for tablets)
  • md (for desktops)
  • lg (for larger desktops)

The classes above can be combined to create more dynamic and flexible layouts.

Basic Structure of a Bootstrap Grid

The following is a basic structure of a Bootstrap grid:

<div class="row">
  <div class="col-*-*"></div>
</div>
<div class="row">
  <div class="col-*-*"></div>
  <div class="col-*-*"></div>
  <div class="col-*-*"></div>
</div>
<div class="row">
  ...
</div>

First; create a row (

). Then, add the desired number of columns (tags with appropriate .col-*-* classes). Note that numbers in .col-*-* should always add up to 12 for each row.

Below we have collected some examples of basic Bootstrap grid layouts.

Two Unequal Columns

.col-sm-9
.col-sm-3