Chapmantaylor.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “en_gb” for attribute “lang” on element “html”: The language subtag “en_gb” is not a valid language subtag.
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)
Element “div” not allowed as child of element “button” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “infographic-projects”.
Attribute “xmlns:a” not allowed here.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Duplicate ID “Layer_2”.
Duplicate ID “Layer_1-2”.
The “for” attribute of the “label” element must refer to a non-hidden form control.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The first occurrence of ID “infographic-projects” was here.
Attribute with the local name “xmlns:a” is not serializable as XML 1.0.
The first occurrence of ID “Layer_2” was here.
The first occurrence of ID “Layer_1-2” was here.
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