Tandd.co.jp W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “apple_touch_icon” for attribute “rel” on element “link”: The string “apple_touch_icon” is not a registered keyword.
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon” or the value “apple-touch-icon-precomposed”.
Bad value “mask_icon” for attribute “rel” on element “link”: The string “mask_icon” is not a registered keyword.
A “link” element with a “color” attribute must have a “rel” attribute that contains the value “mask-icon”.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “navigation” role is unnecessary for element “nav”.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
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