Knowingneurons.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
The “navigation” role is unnecessary for element “nav”.
Empty heading.
Attribute with the local name “xmlns:cc” is not serializable as XML 1.0.
Errors:
CSS: Parse Error.
CSS: “font-size”: “px” is not a “font-size” value.
Bad value “” for attribute “width” on element “img”: The empty string is not a valid non-negative integer.
Bad value “” for attribute “height” on element “img”: The empty string is not a valid non-negative integer.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “xmlns:cc” not allowed here.
Bad value “designer” for attribute “rel” on element “a”: The string “designer” is not a registered keyword.
Element “script” must not have attribute “async” unless attribute “src” is also specified or unless attribute “type” is specified with value “module”.
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