Planetradio.co.uk W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The document is not mappable to XML 1.0 due to a trailing hyphen in a comment.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
Errors:
Bad value “none” for attribute “media” on element “link”: Media query ended prematurely.
Duplicate attribute “rel”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “” for attribute “type” on element “source”: Expected a MIME type but saw the empty string.
Element “img” is missing required attribute “src”.
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
Bogus comment.
Bad value “__bkframe” for attribute “name” on element “iframe”: Browsing context name started with the underscore.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “itemprop” attribute was specified, but the element is not a property of any item.
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