Computer.org 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”.
The “form” role is unnecessary for element “form”.
Empty heading.
Attribute “th:inline” is not serializable as XML 1.0.
Errors:
CSS: “border-width”: Parse Error.
CSS: “border-style”: Parse Error.
CSS: “outline”: only “0” can be a “unit”. You must put a unit after your number.
CSS: “background-color”: Too many values or values are not recognized.
Element “style” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
CSS: “font”: “'Oxygen'” is not a “font-family” value.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Attribute “type” not allowed on element “menu” at this point.
Attribute “th:inline” not allowed on element “script” at this point.
Element “script” must not have attribute “async” unless attribute “src” is also specified or unless attribute “type” is specified with value “module”.
Stray start tag “script”.
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