Prevent Image Resizing in a Responsive Theme

Please look at the site http://bit.ly/12D6erM and shrink the browser horizontally and you’ll see what I mean with the “share” and “new” button/images.

Initially the images were resizing dynamically/responsively when the window was resized, but I wanted to keep/force the height & width to stay the same until the layout jumped into “mobile” mode.

The height issue I was able to fix with an !important tag, but I’m still trying to figure out the horizontal squishing.