Errors:
Quirky doctype. Expected “<!DOCTYPE html>”.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “lang-"en"” not allowed on element “html” at this point.
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Element “link” is missing one or more of the following attributes: “itemprop”, “rel”.
The “rev” attribute on the “link” element is obsolete. Use the “rel” attribute instead, with a term having the opposite meaning.
The “scheme” attribute on the “meta” element is obsolete. Use only one scheme per field, or make the scheme declaration part of the value.
The “bgcolor” attribute on the “body” element is obsolete. Use CSS instead.
The “link” attribute on the “body” element is obsolete. Use CSS instead.
The “alink” attribute on the “body” element is obsolete. Use CSS instead.
The “vlink” attribute on the “body” element is obsolete. Use CSS instead.
The “text” attribute on the “body” element is obsolete. Use CSS instead.
The “center” element is obsolete. Use CSS instead.
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.
The “width” attribute on the “table” element is obsolete. Use CSS instead.
The “align” attribute on the “table” element is obsolete. Use CSS instead.
The “summary” attribute on the “table” element is obsolete. Consider describing the structure of the “table” in a “caption” element or in a “figure” element containing the “table”; or, simplify the structure of the “table” so that no description is needed.
The “border” attribute on the “table” element is obsolete. Use CSS instead.
The “valign” attribute on the “tr” element is obsolete. Use CSS instead.
The “width” attribute on the “td” element is obsolete. Use CSS instead.
The “align” attribute on the “td” element is obsolete. Use CSS instead.
The “align” attribute on the “img” element is obsolete. Use CSS instead.
The “vspace” attribute on the “img” element is obsolete. Use CSS instead.
The “hspace” attribute on the “img” element is obsolete. Use CSS instead.
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
The “align” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginwidth” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginheight” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
Text not allowed in element “iframe” in this context.
The “font” element is obsolete. Use CSS instead.
The “valign” attribute on the “td” element is obsolete. Use CSS instead.
The “nowrap” attribute on the “td” element is obsolete. Use CSS instead.
The “align” attribute on the “tr” element is obsolete. Use CSS instead.
The “height” attribute on the “td” element is obsolete. Use CSS instead.
The “align” attribute on the “p” element is obsolete. Use CSS instead.
The “clear” attribute on the “br” 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.
Table column 2 established by element “td” has no cells beginning in it.
Bad value “1” for attribute “border” on element “img”: Only “0” is a permitted zero literal.
The “align” attribute on the “h2” element is obsolete. Use CSS instead.
The “bgcolor” attribute on the “tr” element is obsolete. Use CSS instead.
The “align” attribute on the “th” element is obsolete. Use CSS instead.
Element “style” not allowed as child of element “td” in this context. (Suppressing further errors from this subtree.)
Attribute “value” not allowed on element “input” at this point.
The “noshade” attribute on the “hr” element is obsolete. Use CSS instead.
The “width” attribute on the “hr” element is obsolete. Use CSS instead.
The “nowrap” attribute on the “th” element is obsolete. Use CSS instead.
The “bgcolor” attribute on the “td” element is obsolete. Use CSS instead.
Too many messages.
Warnings:
Attribute “lang-"en"” is not serializable as XML 1.0.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
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