Otakon.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Start tag “head” seen but an element of the same type was already open.
Attribute “description” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “content”, “property”.
Duplicate ID “logo_img”.
Bad element name “gcse:searchbox-only”: Code point “U+003A” is not allowed
No “p” element in scope but a “p” end tag seen.
The “valign” attribute on the “tr” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “logo_img” was here.
Element name “gcse:searchbox-only” cannot be represented as XML 1.0.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
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