Boellhoff.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Documents should not use “about:legacy-compat”, except if generated by legacy systems that can't output the standard “<!DOCTYPE html>” doctype.
Consider avoiding viewport values that prevent users from resizing documents.
The first occurrence of ID “submit” was here.
The first occurrence of ID “logo-image” was here.
Errors:
Bad value “language” for attribute “http-equiv” on element “meta”.
Attribute “pid” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “content”, “property”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “submit”.
Bad value “tel: +49521448201” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
End tag “div” seen, but there were open elements.
Unclosed element “span”.
Element “p” not allowed as child of element “h2” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “logo-image”.
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