Uef.fi W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A document must not include more than one “meta” element with a “http-equiv” attribute whose value is “content-type”.
Element “gcse:search” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “x-sm” not allowed on element “div” at this point.
Attribute “x-sm” not allowed on element “ul” at this point.
Attribute “x-sm” not allowed on element “li” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Duplicate attribute “style”.
Warnings:
The “banner” role is unnecessary for element “header”.
Element name “gcse:search” cannot be represented as XML 1.0.
The “contentinfo” role is unnecessary for element “footer”.
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