Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “input” is missing required attribute “alt”.
Duplicate ID “intro_article”.
Duplicate ID “intro_article_img”.
Duplicate ID “intro_article_infos”.
Malformed byte sequence: “c3”.
Stray end tag “a”.
“=” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Bad value “field” for attribute “type” on element “input”.
The “center” element is obsolete. Use CSS instead.
No space between attributes.
Stray end tag “div”.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The first occurrence of ID “intro_article” was here.
The first occurrence of ID “intro_article_img” was here.
The first occurrence of ID “intro_article_infos” was here.
This document appears to be written in French. Consider adding “lang="fr"” (or variant) to the “html” start tag.
France FR