Helloandroid.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Attribute “xmlns:fb” not allowed here.
Attribute “xmlns:og” not allowed here.
A document must not include more than one “meta” element with a “http-equiv” attribute whose value is “content-type”.
No “p” element in scope but a “p” end tag seen.
The “align” attribute on the “p” element is obsolete. Use CSS instead.
Stray “/” at the end of an end tag.
End tag “br”.
Bad element name “fb:like-box”: Code point “U+003A” is not allowed
The “center” element is obsolete.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.
Warnings:
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
Attribute with the local name “xmlns:og” is not serializable as XML 1.0.
Empty heading.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
Element name “fb:like-box” cannot be represented as XML 1.0.
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