## mjml-column

Columns enable you to horizontally organize the content within your sections. They must be located under `mj-section` tags in order to be considered by the engine.
To be responsive, columns are expressed in terms of percentage.

Every single column has to contain something because they are responsive containers, and will be vertically stacked on a mobile view. Any standard component, or component that you have defined and registered, can be placed within a column – except `mj-column` or `mj-section` elements.

```xml
<mjml>
  <mj-body>
    <mj-section>
      <mj-column>
        <!-- Your first column -->
      </mj-column>
      <mj-column>
        <!-- Your second column -->
      </mj-column>
    </mj-section>
  </mj-body>
</mjml>
```

<p align="center">
  <a href="https://mjml.io/try-it-live/components/column">
    <img width="100px" src="https://mjml.io/assets/img/svg/TRYITLIVE.svg" alt="try it live" />
  </a>
</p>

<aside class="notice">
  Columns are meant to be used as a container for your content. They must not be used as offset. Any mj-element included in a column will have a width equivalent to 100% of this column's width.
</aside>

<aside class="warning">
  Columns cannot be nested into columns, and sections cannot be nested into columns as well.
</aside>

attribute           | unit        | description                    | default attributes
--------------------|-------------|--------------------------------|--------------------------------------
background-color    | string      | background color for a column  | n/a
border              | string      | css border format              | none
border-bottom       | string      | css border format              | n/a
border-left         | string      | css border format              | n/a
border-right        | string      | css border format              | n/a
border-top          | string      | css border format              | n/a
border-radius       | percent/px  | border radius                  | n/a
width               | percent/px  | column width                   | (100 / number of non-raw elements in section)%
vertical-align      | string      | middle/top/bottom              | top
padding             | px          | supports up to 4 parameters    | n/a
padding-top         | px          | section top offset             | n/a
padding-bottom      | px          | section bottom offset          | n/a
padding-left        | px          | section left offset            | n/a
padding-right       | px          | section right offset           | n/a
css-class           | string      | class name, added to the root HTML element created | n/a