Sites created and published with Parallels Web Presence Builder 11.x is not W3C compliant. To verify this:
- open http://validator.w3.org
- enter address to Parallels Web Presence Builder published site (example: DOMAIN.TLD)
You'll see several errors and warnings.
Here is the Feature Request without ETA:
PPPM-923 - [publish] Site doesn't meet w3c standards