Mathsbot.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Duplicate ID “Home”.
Bad value “#GCSE Resources” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.
Bad value “#Question Generators” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.
Bad value “#Starters and Drills” for attribute “href” on element “a”: Illegal character in fragment: space is not allowed.
Bad value “GCSE Resources” for attribute “id” on element “h3”: An ID must not contain whitespace.
Bad value “Question Generators” for attribute “id” on element “h3”: An ID must not contain whitespace.
Bad value “Starters and Drills” for attribute “id” on element “h3”: An ID must not contain whitespace.
No space between attributes.
Quote “'” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “s” not allowed on element “img” at this point.
Attribute “triangle” not allowed on element “img” at this point.
Attribute “thumbnail'” not allowed on element “img” at this point.
Warnings:
The first occurrence of ID “Home” was here.
Attribute “thumbnail'” is not serializable as XML 1.0.
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