Onetonline.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Attribute “value” not allowed on element “input” at this point.
Bad value “_share” for attribute “target” on element “a”: Reserved keyword “share” used.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “xmlns:dct” not allowed here.
Attribute “xmlns:cc” not allowed here.
Bad value “cc:attributionURL” for attribute “rel” on element “a”: The string “cc:attributionURL” is not a registered keyword.
Warnings:
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
Attribute with the local name “xmlns:dct” is not serializable as XML 1.0.
Attribute with the local name “xmlns:cc” is not serializable as XML 1.0.
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