Errors:
No space between attributes.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “portalbody"” not allowed on element “body” at this point.
Attribute “"” not allowed on element “body” at this point.
Attribute “viewport” not allowed on element “svg” at this point.
Duplicate ID “svg”.
Duplicate ID “bar”.
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 “poster” on element “video”: Must be non-empty.
Bad value “tel:+41 27 966 01 01” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Duplicate ID “mobile-languages”.
Warnings:
Attribute “portalbody"” is not serializable as XML 1.0.
Attribute “"” is not serializable as XML 1.0.
The first occurrence of ID “svg” was here.
The first occurrence of ID “bar” was here.
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “mobile-languages” was here.
This document appears to be written in German. Consider adding “lang="de"” (or variant) to the “html” start tag.
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