Lemellotron.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.
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The “frameborder” attribute on the “iframe” element is obsolete.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.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “” for attribute “src” on element “img”: Must be non-empty.
Attribute “gesture” not allowed on element “iframe” at this point.
Attribute “modestbranding” not allowed on element “iframe” at this point.
Attribute “showinfo” not allowed on element “iframe” at this point.
Attribute “intergrity” not allowed on element “script” at this point.
Warnings:
The “navigation” role is unnecessary for element “nav”.
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