When a product description is long, my product listing looks like this :

http://www.ersindavidson.com/shop/in...=index&cPath=5

(in IE the product listing box moves to left, in Firefox product description is shifted)


This is how it should look:
http://www.ersindavidson.com/shop/in...=index&cPath=2

Product description is displayed with "listingDescription" class. It is by default undefined with Zencart, so I defined it as follows:

.listingDescription {
text-align: center;

}

Note that if I don't define this, in Firefox the box shifts to right.

How can I fix this?