Hola.
Trantando de validar una web (XHTML 1.0 strict) me da este warning en el doctype:
Cita: The detected DOCTYPE Declaration "<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">" has been suppressed and the DOCTYPE for "XHTML 1.0 Strict" inserted instead, but even if no errors are shown below the document will not be Valid until you update it to reflect this new DOCTYPE.
Alguna idea?
Gracias por adelantado, un saludo.