Errors:
Attribute “xmlns:og” not allowed here.
Attribute “xmlns:fb” not allowed here.
A document must not include more than one “meta” element with its “name” attribute set to the value “description”.
Bad value “https://fonts.googleapis.com/css?family=Noto+Serif:400,700|Source+Sans+Pro:300,400,600,900&subset=latin-ext,vietnamese” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
Bad value “menu” for attribute “role” on element “header”.
Attribute “ui-toggle-class” not allowed on element “button” at this point.
Attribute “target” not allowed on element “button” at this point.
Duplicate attribute “data-toggle”.
Attribute “ui-shift” not allowed on element “form” at this point.
Attribute “ui-nav” not allowed on element “nav” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “tooltip” for attribute “rel” on element “a”: The string “tooltip” is not a registered keyword.
Duplicate ID “news”.
Element “a” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Bad value “footer” for attribute “role” on element “footer”.
Warnings:
Attribute with the local name “xmlns:og” is not serializable as XML 1.0.
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
The first occurrence of ID “news” was here.
The value of attribute “title” on element “a” from namespace “http://www.w3.org/1999/xhtml” is not in Unicode Normalization Form C.
The value of attribute “alt” on element “img” from namespace “http://www.w3.org/1999/xhtml” is not in Unicode Normalization Form C.
Text run is not in Unicode Normalization Form C.
The “form” role is unnecessary for element “form”.
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