Errors:
Bad value “Pragma” for attribute “http-equiv” on element “meta”.
Bad value “Expires” for attribute “http-equiv” on element “meta”.
Saw a “form” start tag, but there was already an active “form” element. Nested forms are not allowed. Ignoring the tag.
“"” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
“=” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Bad value “\"//www.googletagmanager.com/ns.html?id=GTM-TV9C46\"” for attribute “src” on element “iframe”: Backslash ("\") used as path segment delimiter.
Bad value “\"0\"” for attribute “height” on element “iframe”: Expected a digit but saw “\” instead.
Bad value “\"0\"” for attribute “width” on element “iframe”: Expected a digit but saw “\” instead.
CSS: “\"display”: Property “\"display” doesn't exist.
CSS: “visibility”: “hidden\"” is not a “visibility” value.
The “center” element is obsolete. Use CSS instead.
The “font” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Stray end tag “form”.
Warnings:
The “form” role is unnecessary for element “form”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “type” attribute is unnecessary for JavaScript resources.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
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