zurb foundation center content in the grid

Question

I'm trying to center horizontally an image into a zurb column but it seems impossible. I tried everything, searched everywhere, but I cant get it to work.

Here is my code:

<div class="row">
    <div class="twelve columns"><br />
        <img src="img_06.jpeg" alt="slide image">
    </div>
</div>

currently landscape images are alright on the 12 column grid, but when a portrait image comes along it is on the left side of the grid. If i give it a 25% padding it goest to the center, but I'm using php to pull all the images from a folder and generate the code on the fly, so i can't have 25% padding on all the images (landscape ones shrink).

Thanks

Answer 1

Edit November 2015: In Foundation 6 check out Typography Helpers

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Edit April 2014: In Foundation 5 check out Utility classes.

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Original answer:

Use the text-center class.

<div class="row">
    <div class="twelve columns text-center"><br />
        <img src="img_06.jpeg" alt="slide image">
    </div>
</div>

Source: https://github.com/zurb/foundation/pull/224