Errors:
Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)
Obsolete doctype. Expected “<!DOCTYPE html>”.
Bad value “Content-Script-Type” for attribute “http-equiv” on element “meta”.
Bad value “imagetoolbar” for attribute “http-equiv” on element “meta”.
Bad value “reply-to” for attribute “http-equiv” on element “meta”.
Bad value “true” for attribute “required” on element “input”.
Duplicate attribute “type”.
Attribute “method” not allowed on element “div” at this point.
Bad value “https://www.blogger.com/blog-this.g?n=WebHome&b=<a href='https://www.vcalc.com/wiki/home/'> https://www.vcalc.com/wiki/home/</a><br/>” for attribute “href” on element “a”: Illegal character in query: “<” is not allowed.
Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
The element “button” must not appear as a descendant of the “a” element.
End tag “div” seen, but there were open elements.
Unclosed element “main”.
Stray end tag “button”.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Stray end tag “main”.
The element “header” must not appear as a descendant of the “footer” element.
Stray end tag “div”.
The “for” attribute of the “label” element must refer to a non-hidden form control.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
The “main” role is unnecessary for element “main”.
United States US