Fmkorea.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “imagetoolbar” for attribute “http-equiv” on element “meta”.
Bad value “” for attribute “media” on element “link”: Media query ended prematurely.
CSS: “padding”: “none” is not a “padding” value.
CSS: “margin”: “none” is not a “margin” value.
Attribute “no-error-return-url” not allowed on element “form” at this point.
End tag “section” seen, but there were open elements.
Unclosed element “div”.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
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).
Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
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