D17.cc 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 “li” at this point.
Attribute “action” not allowed on element “li” at this point.
Attribute “scene” not allowed on element “li” at this point.
Bad value “” for attribute “src” on element “img”: Must be non-empty.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)
Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
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