Healtheintent.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “alt” not allowed on element “button” at this point.
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Attribute value missing.
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
Bad value “500px” for attribute “height” on element “iframe”: Expected a digit but saw “p” instead.
Attribute “type” not allowed on element “iframe” at this point.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
No “p” element in scope but a “p” end tag seen.
Element “p” not allowed as child of element “h2” in this context. (Suppressing further errors from this subtree.)
Warnings:
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “button” role is unnecessary for element “button”.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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