Blueprism.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “jp” for attribute “hreflang” on element “link”: The language subtag “jp” is not a valid ISO language part of a language tag.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
The “sizes” attribute may be specified only if the “srcset” attribute is also present.
Attribute “href” not allowed on element “use” at this point.
No space between attributes.
Heading cannot be a child of another heading.
Stray end tag “h4”.
Bad value “” for attribute “src” on element “iframe”: Must be non-empty.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Attribute “allow” not allowed on element “iframe” at this point.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Empty heading.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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