I was able to achive the round corner approach using "snazzy" method that i found in an older post.
You can take a look at the site after the updates where applied. www.coolcarpartsonline.com

I tried to post the code you listed in the firefox developer tool and nothing happens.

If you got time you can pull out the site CSS in the Firefox and see what I did to get the effect of the round corner. Maybe you have a different approach.

I think If I can get rid of the bulletin I will be close to imply the Cat. dressing to the side boxes.