Zurich.ch W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
The element “header” must not appear as a descendant of the “header” element.
Bad value “tel:0800 80 80 80” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Bad value “tel:+41 44 628 98 98” 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.
Attribute “runat” not allowed on element “li” at this point.
Attribute “disablewebediting” not allowed on element “a” at this point.
Attribute “disablewebedit” not allowed on element “a” at this point.
Warnings:
Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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).
Empty heading.
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