Referent.ru W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Element name “gcse:searchbox-only” cannot be represented as XML 1.0.
Potentially bad value “allow-same-origin allow-forms allow-scripts” for attribute “sandbox” on element “iframe”: Setting both “allow-scripts” and “allow-same-origin” is not recommended, because it effectively enables an embedded page to break out of all sandboxing.
Errors:
Bad element name “gcse:searchbox-only”: Code point “U+003A” is not allowed
End tag “br”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “105%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
The “align” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginheight” attribute on the “iframe” element is obsolete. Use CSS instead.
The “marginwidth” attribute on the “iframe” element is obsolete. Use CSS instead.
Text not allowed in element “iframe” in this context.
Attribute “date” not allowed on element “a” at this point.
Element “div” not allowed as child of element “h2” in this context. (Suppressing further errors from this subtree.)
The “align” attribute on the “img” element is obsolete. Use CSS instead.
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