Dear Sir

we are trying to get W3C Validation Certificate for our website created by SharePoint 2013 which uses SharePoint Controls for Content Management Features, but we are finding difficult to rectify the following errors listed by validator - https://validator.w3.org/check

1. Attribute webpartid not allowed on element div at this point.
2. Attribute haspers not allowed on element div at this point.
3. Attribute width not allowed on element div at this point.
4. Attribute allowdelete not allowed on element div at this point.
5. Attribute allowexport not allowed on element div at this point.
6. Bad value for attribute action on element form: Must be non-empty.
7. Element ie:menuitem not allowed as child of element menu in this context.. (Suppressing further errors from this subtree.)
8. allowdelete not allowed on element div at this point
9. attribute moz_resizing not allowed on element
10. allowexport not allowed on element div at this point
11.element marqee not allowed as child of element div in this context.(Suppressing further errors from this subtree.)
12. only formreport not allowed on element div at this point
13. attribute componentid not allowed on element div at this point
14. attribute name not allowed on element div at this point
15. attribute autocorrect not allowed on element div at this point
16. menu element is not supported in all browsers.
17. element name cannot be represented as xml1.0

pls.help us to resolve this issues and get certified from world recognised W3C Organisation.
or
if this is not possible. we request you to create and include a new option to ignore SharePoint Site based errors by providing a check box selecting option.

we are looking forward to donate for your support.

thanks
vijay
Web Administrator
Government of Karnataka, India