Yantuchina.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Duplicate ID “header”.
End tag “div” seen, but there were open elements.
Unclosed element “a”.
Start tag “a” seen but an element of the same type was already open.
No “a” element in scope but a “a” end tag seen.
Stray end tag “a”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “dl” is missing a required child element.
The element “h2” must not appear as a descendant of the “dt” element.
Bad value “” for attribute “name” on element “input”: Must not be empty.
No space between attributes.
Element “dt” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Element “dd” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Stray start tag “div”.
Cannot recover after last error. Any further errors will be ignored.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The first occurrence of ID “header” was here.
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