Errors:
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 “100%” for attribute “width” on element “video”: Expected a digit but saw “%” instead.
Bad value “100%” for attribute “height” on element “video”: Expected a digit but saw “%” instead.
Duplicate ID “c823”.
Duplicate ID “c836”.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “c835”.
Duplicate ID “c3543”.
Duplicate ID “c3684”.
Duplicate ID “c3547”.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Duplicate ID “c826”.
Duplicate ID “c854”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “listingElement0”.
Duplicate ID “listingElement1”.
Duplicate ID “listingElement2”.
Duplicate ID “listingElement3”.
Duplicate ID “listingElement4”.
Duplicate ID “listingElement5”.
Duplicate ID “gutefrage-logo”.
Duplicate ID “visual-mark”.
Duplicate ID “Final_Shape”.
Duplicate ID “gf”.
Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “c823” was here.
The first occurrence of ID “c836” was here.
The first occurrence of ID “c835” was here.
The first occurrence of ID “c3543” was here.
The first occurrence of ID “c3684” was here.
The first occurrence of ID “c3547” was here.
The first occurrence of ID “c826” was here.
The first occurrence of ID “c854” was here.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The first occurrence of ID “listingElement0” was here.
The first occurrence of ID “listingElement1” was here.
The first occurrence of ID “listingElement2” was here.
The first occurrence of ID “listingElement3” was here.
The first occurrence of ID “listingElement4” was here.
The first occurrence of ID “listingElement5” was here.
The “contentinfo” role is unnecessary for element “footer”.
The first occurrence of ID “gutefrage-logo” was here.
The first occurrence of ID “visual-mark” was here.
The first occurrence of ID “Final_Shape” was here.
The first occurrence of ID “gf” was here.
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