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”.
Element “gcse:search” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The “center” element is obsolete. Use CSS instead.
The “longdesc” attribute on the “img” element is obsolete. Use a regular “a” element to link to the description.
Bad value “up” for attribute “rel” on element “a”: The string “up” is not a registered keyword.
Duplicate ID “SignupButton”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
A “link” element must not appear as a descendant of a “body” element unless the “link” element has an “itemprop” attribute or has a “rel” attribute whose value contains “dns-prefetch”, “pingback”, “preconnect”, “prefetch”, “preload”, “prerender”, or “stylesheet”.
Bad value “Menu” for attribute “rel” on element “a”: The string “Menu” is not a registered keyword.
No space between attributes.
Bad value “150px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Bad value “mailto:nhatrangclub@gmail.com?subject=Liên hệ quảng cáo trên NhaTrangClub.vn” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Bad value “mailto: nhatrangclub@gmail.com” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Warnings:
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
Element name “gcse:search” cannot be represented as XML 1.0.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The first occurrence of ID “SignupButton” was here.
The “date” input type is not supported in all browsers. Please be sure to test, and consider using a polyfill.
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