Bootstrap Grid System
Bootstrap's grid system allows up to 12 columns across the page.
If you do not want to use all 12 column individually, you can group the columns together to create wider columns:
| span 1 | span 1 | span 1 | span 1 | span 1 | span 1 | span 1 | span 1 | span 1 | span 1 | span 1 | span 1 |
| span 4 | span 4 | span 4 | |||||||||
| span 4 | span 8 | ||||||||||
| span 6 | span 6 | ||||||||||
| span 12 | |||||||||||
Bootstrap's grid system is responsive, and the columns will re-arrange automatically depending on the screen size.
Grid Classes
The Bootstrap grid system has four 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 (<div
class="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.
Three Equal Columns
The following example shows how to get a three equal-width columns starting at tablets and scaling to large desktops. On mobile phones, the columns will automatically stack:
Example
<div class="row">
<div class="col-sm-4">.col-sm-4</div>
<div class="col-sm-4">.col-sm-4</div>
<div
class="col-sm-4">.col-sm-4</div>
</div>
Try it Yourself »
Two Unequal Columns
The following example shows how to get two various-width columns starting at tablets and scaling to large desktops:
Example
<div class="row">
<div
class="col-sm-4">.col-sm-4</div>
<div
class="col-sm-8">.col-sm-8</div>
</div>
Try it Yourself »
Tip: You will learn more about Bootstrap grids later in this tutorial.