centering fluid image within fluid div
I hope I'm posting in the correct category, I'm using Twitter Bootstrap and I'm trying to center a fluid image within a fluid div. Underneath the image is some text which I want aligned left so using text-align center to the parent div does not work. This is the HTML:
<div class="span4 well">
<img src="img.png" />
<h2><a href="#">Some text</a></h2>
<p class="well-text">Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, </p>
The class "well" gives the span4 a nice soft grey background, but the image is aligned to the right of the well. Anyone familiar with Bootstrap that can see what I'm missing? I bet there's an easy fix for this.