3000.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “Cache-Control” for attribute “http-equiv” on element “meta”.
Attribute “is-default” not allowed on element “input” at this point.
Bad value “javascript:void();” for attribute “href” on element “a”: syntax error
Duplicate attribute “target”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate attribute “class”.
No space between attributes.
Stray start tag “script”.
Warnings:
The “language” attribute on the “script” element is obsolete. You can safely omit it.
This document appears to be written in Simplified Chinese. Consider adding “lang="zh-hans"” (or variant) to the “html” start tag.
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