Errors:
Bad value “author” for attribute “http-equiv” on element “meta”.
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 “submit” for attribute “type” on element “a”: Subtype missing.
Attribute “rel” not allowed on element “ul” at this point.
Duplicate ID “Ebene_1”.
Duplicate ID “Ebene_2”.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
End tag “section” seen, but there were open elements.
Unclosed element “div”.
Attribute “alt” not allowed on element “a” at this point.
Duplicate attribute “tabindex”.
Duplicate attribute “maxlength”.
Attribute “onpaste” not allowed on element “input” at this point.
Duplicate ID “cc”.
Duplicate ID “lc”.
Bad value “” for attribute “src” on element “img”: Must be non-empty.
The “for” attribute of the “label” element must refer to a non-hidden form control.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “Ebene_1” was here.
The first occurrence of ID “Ebene_2” was here.
The first occurrence of ID “cc” was here.
The first occurrence of ID “lc” was here.
Empty heading.
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).
France FR