Uspceu.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Element “meta” is missing one or more of the following attributes: “content”, “property”.
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
The “center” element is obsolete. Use CSS instead.
Attribute “name” not allowed on element “div” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
No space between attributes.
Saw “"” when expecting an attribute name. Probable cause: “=” missing immediately before.
Attribute “"” not allowed on element “div” at this point.
Bad value “” for attribute “src” on element “iframe”: Must be non-empty.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Warnings:
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Attribute “"” is not serializable as XML 1.0.
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