Picreel.com 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.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “button” for attribute “type” on element “a”: Subtype missing.
Attribute “xmlns:ev” not allowed here.
Attribute “type” not allowed on element “textarea” at this point.
Attribute “value” not allowed on element “textarea” at this point.
Duplicate ID “submit-button”.
Stray end tag “div”.
Duplicate ID “step-1”.
Duplicate ID “step-2”.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
Empty heading.
Attribute with the local name “xmlns:ev” is not serializable as XML 1.0.
The first occurrence of ID “submit-button” was here.
The first occurrence of ID “step-1” was here.
The first occurrence of ID “step-2” was here.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
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