Errors:
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Element “link” is missing one or more of the following attributes: “itemprop”, “property”, “rel”.
Stray end tag “noscript”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “tel:09 70 82 50 00” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Bad value “” for attribute “name” on element “select”: Must not be empty.
Bad value “” for attribute “id” on element “select”: An ID must not be the empty string.
Duplicate attribute “class”.
Bad value “nope” for attribute “autocomplete” on element “form”.
Bad value “campeole-camping” for attribute “autocomplete” on element “select”: The string “campeole-camping” is not a valid autofill field name.
Bad value “true” for attribute “readonly” on element “input”.
When the “srcset” attribute has any image candidate string with a width descriptor, the “sizes” attribute must also be present.
The element “button” must not appear as a descendant of the “a” element.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Attribute “itemprop” not allowed on element “svg” at this point.
Attribute “content” not allowed on element “svg” at this point.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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