Livre-rare-book.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “en_US” for attribute “lang” on element “title”: The language subtag “en_us” is not a valid language subtag.
Bad value “screen, projection” for attribute “media” on element “link”: Deprecated media type “projection”. For guidance, see the Media Types section in the current Media Queries specification.
Element “dl” is missing a required instance of child element “dd”.
Element “dl” is missing a required child element.
Warnings:
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
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