Gradschoolhub.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “” for attribute “href” on element “link”: Must be non-empty.
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Attribute “social_network” not allowed on element “a” at this point.
Attribute “social_link” not allowed on element “a” at this point.
Attribute “icon_color” not allowed on element “a” at this point.
Attribute “box_color” not allowed on element “a” at this point.
Attribute “last” not allowed on element “a” at this point.
Element “div” not allowed as child of element “h3” in this context. (Suppressing further errors from this subtree.)
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
Duplicate ID “container”.
Warnings:
Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)
The “form” role is unnecessary for element “form”.
The first occurrence of ID “container” was here.
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