Feller.ch W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Stray end tag “link”.
Bad value “true” for attribute “novalidate” on element “form”.
Bad value “true” for attribute “required” on element “input”.
Bad value “https://www.feller.ch/de/Unternehmen/Events-Overview-Page?id={20874143-40BC-4144-BD33-38BF44412210}” for attribute “href” on element “a”: Illegal character in query: “{” is not allowed.
Bad value “https://www.feller.ch/de/Unternehmen/Events-Overview-Page?id={AC12478C-4564-4D34-8F0A-CD698281258A}” for attribute “href” on element “a”: Illegal character in query: “{” is not allowed.
Attribute “disablewebedit” not allowed on element “a” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
The “navigation” role is unnecessary for element “nav”.
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).
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
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