Hearst.co.jp W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
A document must not include more than one “meta” element with its “name” attribute set to the value “description”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “value” not allowed on element “input” at this point.
Element “input” is missing required attribute “alt”.
Duplicate ID “search”.
Duplicate ID “search-submit”.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The “banner” role is unnecessary for element “header”.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The “contentinfo” role is unnecessary for element “footer”.
The first occurrence of ID “search” was here.
The first occurrence of ID “search-submit” was here.
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