I'm currently having an issue in a client website where

Hello,

I'm currently having an issue in a client website where when the site is viewed on a mobile device, the images on the homepage don't seem to be working. I know this is a theme not from WPMU (it's called Slash WP) but I wanted to ask if there's a quick fix I can implement in the HTML/CSS to correct this bug rapidly.

Thanks very much in advance,

Charles