Ubl.ac.id 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.
Bad value “” for attribute “src” on element “img”: Must be non-empty.
Duplicate ID “post_post_6038”.
The “center” element is obsolete. Use CSS instead.
No “p” element in scope but a “p” end tag seen.
Attribute “scoped” not allowed on element “style” at this point.
Attribute “allow” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “post_post_6038” was here.
This document appears to be written in Indonesian but the “html” start tag has “lang="en-US"”. Consider using “lang="id"” (or variant) instead.
Indonesia ID