Netclipart.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Start tag seen without seeing a doctype first. Expected “<!DOCTYPE html>”.
CSS: “margin-block-start”: Property “margin-block-start” doesn't exist.
CSS: “margin-block-end”: Property “margin-block-end” doesn't exist.
CSS: “padding-inline-start”: Property “padding-inline-start” doesn't exist.
Duplicate ID “Page-1”.
Bad value “https://www.w3.org/1999/xlink” for the attribute “xmlns:link” (only “http://www.w3.org/1999/xlink” permitted here).
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “style” not allowed as child of element “header” in this context. (Suppressing further errors from this subtree.)
Bad value “navigation” for attribute “role” on element “ul”.
Bad value “true” for attribute “defer” on element “script”.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The first occurrence of ID “Page-1” was here.
The “banner” role is unnecessary for element “header”.
Attribute “xmlns:xlink” with a value other than “http://www.w3.org/1999/xlink” is not serializable as XML 1.0 without changing document semantics.
The “navigation” role is unnecessary for element “nav”.
The “main” role is unnecessary for element “main”.
The “contentinfo” role is unnecessary for element “footer”.
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