Frankfurt-airport.com W3C HTML Markup Validation
HTML markup errors and warnings
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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”.
Bad value “https://search.frankfurt-airport.com/de/global-search#searchperience@?searchperience[querystring]={query-string}” for attribute “action” on element “form”: Illegal character in fragment: “[” is not allowed.
Bad value “http://login.frankfurt-airport.com/auth/realms/fraaccount/protocol/openid-connect/auth?response_type=code&client_id={CLIENT_ID}&redirect_uri={REDIRECT_URI}&login=true&kc_locale=de” for attribute “href” on element “a”: Illegal character in query: “{” is not allowed.
Element “img” is missing required attribute “src”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “a” not allowed on element “script” at this point.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
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).
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