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”.
No space between attributes.
Saw “"” when expecting an attribute name. Probable cause: “=” missing immediately before.
Attribute “"” not allowed on element “div” at this point.
Bad value “Receiver und 3D-Blu-Ray-Player” for attribute “id” on element “input”: An ID must not contain whitespace.
Bad value “Receiver und 3D-Blu-Ray-Player” for attribute “for” on element “label”: An ID must not contain whitespace.
The element “label” must not appear as a descendant of the “a” element.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
When the “srcset” attribute has any image candidate string with a width descriptor, the “sizes” attribute must also be present.
Element “a” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
End tag “div” seen, but there were open elements.
Unclosed element “nav”.
Stray end tag “nav”.
Element “style” not allowed as child of element “section” in this context. (Suppressing further errors from this subtree.)
Stray end tag “img”.
Bad value “javascript://Chat” for attribute “href” on element “a”: missing } after function body
Attribute “parsley-type” not allowed on element “input” at this point.
Attribute “parsley-required” not allowed on element “input” at this point.
Bad value “” for attribute “aria-labelledby” on element “div”: An IDREFS value must contain at least one non-whitespace character.
Element “div” not allowed as child of element “label” in this context. (Suppressing further errors from this subtree.)
A slash was not immediately followed by “>”.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “support-knowledgebase.html""” not allowed on element “a” at this point.
Attribute “https:” not allowed on element “a” at this point.
Attribute “www.harmankardon.de” not allowed on element “a” at this point.
Attribute “returns.html""” not allowed on element “a” at this point.
Attribute “bulk-purchase-program.html""” not allowed on element “a” at this point.
“"” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Attribute “content?contentid” not allowed on element “a” at this point.
Attribute “e-learning.html""” not allowed on element “a” at this point.
Bad value “tel:+49 3022957806” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Duplicate ID “facebook_icon”.
Duplicate ID “pinterest_icon”.
Duplicate ID “twitter_icon”.
Duplicate ID “instagram_icon”.
Duplicate ID “youtube_icon”.
Duplicate attribute “class”.
Bad value “true” for attribute “async” on element “script”.
Stray start tag “script”.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
Attribute “"” is not serializable as XML 1.0.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Attribute “support-knowledgebase.html""” is not serializable as XML 1.0.
Attribute “https:” is not serializable as XML 1.0.
Attribute “returns.html""” is not serializable as XML 1.0.
Attribute “bulk-purchase-program.html""” is not serializable as XML 1.0.
Attribute “content?contentid” is not serializable as XML 1.0.
Attribute “e-learning.html""” is not serializable as XML 1.0.
The first occurrence of ID “facebook_icon” was here.
The first occurrence of ID “pinterest_icon” was here.
The first occurrence of ID “twitter_icon” was here.
The first occurrence of ID “instagram_icon” was here.
The first occurrence of ID “youtube_icon” was here.
This document appears to be written in German but the “html” start tag has “lang="en"”. Consider using “lang="de"” (or variant) instead.
Germany DE