Codebetter.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginheight” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginwidth” attribute on the “iframe” element is obsolete. Use CSS instead.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Stray end tag “head”.
Start tag “body” seen but an element of the same type was already open.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Saw a start tag “image”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Stray end tag “image”.
Duplicate ID “main”.
Attribute “rel” not allowed on element “span” at this point.
Bad value “generator” for attribute “rel” on element “a”: The string “generator” is not a registered keyword.
Warnings:
The first occurrence of ID “main” was here.
Empty heading.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
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