Errors:
Bad value “at” for attribute “lang” on element “html”: The language subtag “at” is not a valid ISO language part of a language tag.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
A “charset” attribute on a “meta” element found after the first 1024 bytes.
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
Attribute “autocorrect” not allowed on element “input” at this point.
Attribute “autocapitalize” not allowed on element “input” at this point.
Element “h3” not allowed as child of element “label” in this context. (Suppressing further errors from this subtree.)
Element “option” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Duplicate attribute “name”.
Attribute “readonly” not allowed on element “select” at this point.
Element “optgroup” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Bad value “true” for attribute “readonly” on element “input”.
Any “input” descendant of a “label” element with a “for” attribute must have an ID value that matches that “for” attribute.
Duplicate attribute “checked”.
The “label” element may contain at most one “button”, “input”, “meter”, “output”, “progress”, “select”, or “textarea” descendant.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “for” attribute of the “label” element must refer to a non-hidden form control.
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.
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).
“label” element with multiple labelable descendants.
This document appears to be written in German but the “html” start tag has “lang="at"”. Consider using “lang="de"” (or variant) instead.
Austria AT