Otiumla.com 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 “banner” role is unnecessary for element “header”.
Empty heading.
The “contentinfo” role is unnecessary for element “footer”.
“label” element with multiple labelable descendants.
Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Bad value “” for attribute “name” on element “input”: Must not be empty.
Heading cannot be a child of another heading.
End tag “div” seen, but there were open elements.
Unclosed element “h4”.
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 “target” on element “a”: Browsing context name must be at least one character long.
The “label” element may contain at most one “button”, “input”, “meter”, “output”, “progress”, “select”, or “textarea” descendant.
Element “div” not allowed as child of element “label” in this context. (Suppressing further errors from this subtree.)
No “p” element in scope but a “p” end tag seen.
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