Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Duplicate attribute “onclick”.
Duplicate ID “sidebar”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “maxlength” not allowed on element “input” at this point.
Attribute “size” not allowed on element “input” at this point.
Attribute “maxlength” is only allowed when the input type is “email”, “password”, “search”, “tel”, “text”, or “url”.
Duplicate ID “social-instagram”.
Duplicate ID “social-linkedin”.
Duplicate ID “social-twitter”.
Duplicate ID “social”.
The “align” attribute on the “p” element is obsolete. Use CSS instead.
Warnings:
The first occurrence of ID “sidebar” was here.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
The first occurrence of ID “social-instagram” was here.
The first occurrence of ID “social-linkedin” was here.
The first occurrence of ID “social-twitter” was here.
The first occurrence of ID “social” was here.
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