Guguguru.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
Element “end” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Attribute “product-id” not allowed on element “span” at this point.
Attribute “product-id” not allowed on element “a” at this point.
Bad value “steps” for attribute “role” on element “section”.
Bad value “tour” for attribute “role” on element “section”.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “blog” for attribute “role” on element “section”.
Bad value “sponsors” for attribute “role” on element “section”.
Bad value “supporting” for attribute “role” on element “div”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “xml” not allowed on element “script” at this point.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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