It would be nice to have valid W3C html documents
Be even nicer if you reported the specific pages in the bugtracker so that they would get fixed.
[url=“http://demo.cs-cart.com/”]Instant Demo - CS-Cart Multi-Vendor Demo Try Free for 15 days tested with validator.w3.org
http://validator.w3…=Inline&group=0
contains 12 errors and 1 warning 
Point being that this should be reported through the bugtracker, not in the community forums… “The community” is not able to address it in the product.
bugtracker ? you mean sugest a feature in the uservoice section of cs-cart ?
Link provided by Racingsolutions or click the Bugtracker link at the top of this page.
thank you