Problem with W3C validator

Hello,
I cannot correct the errors of my Wordpress site. I need help because I do
not understand how to fix them.
Thank you to explain to me clearly how

http://validator.w3.org/check?uri=cadeaudessinservices.fr

Regards
Philippe

NOTE: Whenever possible, give the address of the document you were checking.

Received on Friday, 19 April 2013 14:41:19 UTC