Twint.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”.
Bad value “de_CH” for attribute “lang” on element “abbr”: The language subtag “de_ch” is not a valid language subtag.
Element “picture” is missing a required instance of child element “img”.
No “p” element in scope but a “p” end tag seen.
Bad value “search” for attribute “is” on element “div”: Must contain "“-”" (hyphen)
Attribute “locale” not allowed on element “div” at this point.
Bad value “sticky_badge” for attribute “is” on element “div”: Must contain "“-”" (hyphen)
Attribute “content” not allowed on element “div” at this point.
Attribute “link” not allowed on element “div” at this point.
Attribute “target_audience” not allowed on element “div” at this point.
Attribute “:initial_is_closed” not allowed on element “div” at this point.
Warnings:
Attribute “:initial_is_closed” is not serializable as XML 1.0.
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