Weibomiaopai.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
The element “button” must not appear as a descendant of the “a” element.
Attribute “target” not allowed on element “button” 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.
The “center” element is obsolete. Use CSS instead.
The “font” element is obsolete. Use CSS instead.
Duplicate ID “notice”.
Element “script” must not have attribute “async” unless attribute “src” is also specified.
End tag “center” seen, but there were open elements.
Unclosed element “div”.
Stray end tag “div”.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
The first occurrence of ID “notice” was here.
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