User:It writer/W3C conformance icon

W3C conformance icons are standard-size icons published by the World Wide Web Consortium to indicate that certain parts of a website follow W3C recommendations or standards. Conformace icons can be used after validating Web documents, including the markup, the style sheets, or the new feed. Documents should provide error-free markup to use W3C conformance icons. They also should be both well-formed and valid.