Offeroftheday.co.uk W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “cache-control” for attribute “http-equiv” on element “meta”.
Attribute “href” not allowed on element “button” at this point.
Stray end tag “a”.
Element “ul” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
A slash was not immediately followed by “>”.
Quote “'” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Bad value “this.onerror=null;this.src=” for attribute “onerror” on element “img”: syntax error
Attribute “img” not allowed on element “img” at this point.
Attribute “no_image.jpg';'” not allowed on element “img” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
Attribute “no_image.jpg';'” is not serializable as XML 1.0.
This document appears to be written in English but the “html” start tag has an empty “lang” attribute. Consider using “lang="en"” (or variant) instead.
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