Errors:
Attribute “xmlns:fb” not allowed here.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “true” for attribute “async” on element “script”.
Element “script” must not have attribute “async” unless attribute “src” is also specified or unless attribute “type” is specified with value “module”.
Bad value “up” for attribute “rel” on element “a”: The string “up” is not a registered keyword.
The “center” element is obsolete. Use CSS instead.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
Element “img” is missing required attribute “src”.
Bad value “Menu” for attribute “rel” on element “a”: The string “Menu” is not a registered keyword.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “thread-1758584”.
Duplicate ID “thread-1758611”.
Duplicate ID “PreviewTooltip”.
Any “input” descendant of a “label” element with a “for” attribute must have an ID value that matches that “for” attribute.
Attribute “alt” not allowed on element “a” at this point.
Warnings:
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
The “type” attribute is unnecessary for JavaScript resources.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The first occurrence of ID “thread-1758584” was here.
The first occurrence of ID “thread-1758611” was here.
The first occurrence of ID “PreviewTooltip” was here.
The “charset” attribute on the “script” element is obsolete.
The “date” input type is not supported in all browsers. Please be sure to test, and consider using a polyfill.
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