Doba.pl W3C HTML Markup Validation
HTML markup errors and warnings
(Rescan now...)
Errors:
Bad value “true” for attribute “async” on element “script”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
“"” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Bad value “_"blank"” for attribute “target” on element “a”: Reserved keyword “"blank"” used.
Attribute “witdh” not allowed on element “img” at this point.
Attribute “webkitallowfullscreen” not allowed on element “iframe” at this point.
Attribute “mozallowfullscreen” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Element “center” not allowed as child of element “h3” in this context. (Suppressing further errors from this subtree.)
The “center” element is obsolete. Use CSS instead.
Bad value “_black” for attribute “target” on element “a”: Reserved keyword “black” used.
Warnings:
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
Poland PL