Hi,

Yes, you can style second level items in CMSTreeMenu. You just need to add prefix for level of menu you would like to style.

For example you may add CSS prefix: ;sub; which adds to second level prefix "sub". Then you can go to CSS stylesheet and add class like this:

.subCMSTreeMenuLink {
	background: blue;
}

This will add blue background to second level of menu.

Best regards,
Vita Janecek