Hello,
I took a look at the link you provided above and noticed the same behavior.
Which version of the Cart and DNN are you running?
1. This may be a css conflict with the skin you have installed. As a test can you enable the default DNN skin to see if the buttons displays correctly.
2. You should be able to change the background color or text color of the following class in the module.css file located in DesktopModules\Smith.CategoryMenu:
.SelectedNodeStyle
{
font-size: 12px;
display: block;
text-decoration: none;
background-color: #D7D7D7;
/*border: 1px solid #999999;*/
padding: 2px 2px 2px 2px;
3. I was unable to see this issue on your site however this may also be the result of a css conflict, when you enable the default DNN skin does it display correctly?
Thanks,