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 first child “option” element of a “select” element with a “required” attribute, and without a “multiple” attribute, and without a “size” attribute whose value is greater than “1”, must have either an empty “value” attribute, or must have no text content. Consider either adding a placeholder option label, or adding a “size” attribute with a value equal to the number of “option” elements.
Stray end tag “optgroup”.
The “frameborder” attribute on the “iframe” element is obsolete.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 character “<” after “<”. Probable cause: Unescaped “<”. Try escaping it as “<”.
Bad character “4” after “<”. Probable cause: Unescaped “<”. Try escaping it as “<”.
The “width” attribute on the “hr” element is obsolete. Use CSS instead.
No space between attributes.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “0px” not allowed on element “p” at this point.
Attribute “!important;"” not allowed on element “p” at this point.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Text run is not in Unicode Normalization Form C.
Attribute “0px” is not serializable as XML 1.0.
Attribute “!important;"” is not serializable as XML 1.0.
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