Burr.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
No “li” element in scope but a “li” end tag seen.
The “center” element is obsolete. Use CSS instead.
Attribute “value” not allowed on element “select” at this point.
Attribute “_lpchecked” not allowed on element “form” at this point.
No “p” element in scope but a “p” end tag seen.
Attribute “border” not allowed on element “a” at this point.
No space between attributes.
Saw “"” when expecting an attribute name. Probable cause: “=” missing immediately before.
Attribute “"” not allowed on element “img” at this point.
Warnings:
Attribute “"” is not serializable as XML 1.0.
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).
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