Tumaster.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The first occurrence of ID “tipo” was here.
The first occurrence of ID “que” was here.
The first occurrence of ID “prov” was here.
The first occurrence of ID “submit” was here.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Errors:
Bad value “x-dns-prefetch-control” for attribute “http-equiv” on element “meta”.
A “charset” attribute on a “meta” element found after the first 1024 bytes.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “runat” not allowed on element “ul” at this point.
Duplicate ID “tipo”.
Duplicate ID “que”.
Duplicate ID “prov”.
Duplicate ID “submit”.
Element “span” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “script” must not have attribute “async” unless attribute “src” is also specified.
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