Yunpian.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”.
Bad value “Cache-Control” for attribute “http-equiv” on element “meta”.
Element “title” must not be empty.
Bad value “100%” for attribute “width” on element “video”: Expected a digit but saw “%” instead.
Bad value “auto” for attribute “height” on element “video”: Expected a digit but saw “a” instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
No space between attributes.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Element “p” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)
This document appears to be written in English but the “html” start tag has “lang="zh-CN"”. Consider using “lang="en"” (or variant) instead.
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