Simonandschuster.biz W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Element “script” must not have attribute “async” unless attribute “src” is also specified.
Attribute “alt” not allowed on element “a” at this point.
Attribute “href” not allowed on element “button” at this point.
Bad value “textbox” for attribute “role” on element “input”.
Element “img” is missing required attribute “src”.
Element “ul” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
“"” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Duplicate ID “footer”.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
The “form” role is unnecessary for element “form”.
The “textbox” role is unnecessary for an “input” element that has no “list” attribute and whose type is “search”.
The “navigation” role is unnecessary for element “nav”.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The first occurrence of ID “footer” was here.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
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