Librarycat.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “features”.
No space between attributes.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “bouncein"” not allowed on element “span” at this point.
Element “div” not allowed as child of element “h2” in this context. (Suppressing further errors from this subtree.)
No “p” element in scope but a “p” end tag seen.
Stray end tag “h2”.
Duplicate ID “about”.
Attribute “xdata-animation” not allowed on element “div” at this point.
Warnings:
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The first occurrence of ID “features” was here.
Attribute “bouncein"” is not serializable as XML 1.0.
Empty heading.
The first occurrence of ID “about” was here.
United States US