Akruto.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Attribute “rel” not allowed on element “style” at this point.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
Bad value “100%” for attribute “height” on element “iframe”: Expected a digit but saw “%” instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Attribute “xmlns:v” not allowed here.
Attribute “rel” not allowed on element “span” at this point.
Warnings:
Attribute with the local name “xmlns:v” is not serializable as XML 1.0.
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