Nishinippon.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”.
Attribute “alt” not allowed on element “input” at this point.
Duplicate attribute “class”.
The text content of element “time” was not in the required format: The literal did not satisfy the time-datetime format.
Element “img” is missing required attribute “src”.
Duplicate ID “div-gpt-ad-1513732973948-0”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “div-gpt-ad-1513732973948-0” was here.
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