Ourmind.ru W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Duplicate ID “page”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad element name “gcse:searchbox-only”: Code point “U+003A” is not allowed
The “center” element is obsolete. Use CSS instead.
Garbage after “</”.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Warnings:
The first occurrence of ID “page” was here.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Element name “gcse:searchbox-only” cannot be represented as XML 1.0.
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