Image Size on Upsells

Hi,

I’m using the upsells feature on my woocommerce products. Here is an example (http://thepaisleybox.com/product/personalized-leather-jewelry-case/).

Like many others have complained, the image size is too large. I found the below code on my stylesheet and adjusted down the width percentage. Nothing is happening (I cleared the history and re-tried as well).

.woocommerce .related ul.products li.product, .upsells.products ul.products li.product, .upsells.products ul li.product img {width:55%; margin-left: auto; margin-right: auto;}

Anyone have any ideas?

Thank You,
Colleen