www-validator@w3.org from November 2019 by subject

center images

DOCTYPE HTML 4.01 + RDFa

fix validator link to discontinued w3c page

Potential checking error

Problem with opensp - 1.5. - 1

Validating XHTML+RDFa 1.1

Last message date: Friday, 29 November 2019 12:23:56 UTC