Css-lecture.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “screen, tv, projection” for attribute “media” on element “link”: Deprecated media type “tv”. For guidance, see the Media Types section in the current Media Queries specification.
Attribute “value” not allowed on element “input” at this point.
Bad value “2011-04-05:13:44” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
Bad value “2011-04-04:15:28” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
Bad value “2011-04-01:11:26” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
Bad value “2011-03-31:00:00” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
Bad value “2010-12-01:11:32” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
Warnings:
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
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