Cdpn.io W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “” for attribute “type” on element “link”: Expected a MIME type but saw the empty string.
Duplicate ID “eye”.
Element “ul” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
End tag “header” seen, but there were open elements.
Unclosed element “div”.
Bad value “true” for attribute “required” on element “input”.
Element “img” is missing required attribute “src”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Start tag “a” seen but an element of the same type was already open.
Stray end tag “a”.
Bad value “” for attribute “aria-labelledby” on element “div”: An IDREFS value must contain at least one non-whitespace character.
Warnings:
The first occurrence of ID “eye” was here.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
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