Publicschoolreview.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Attribute “itemprop” not allowed on element “link” at this point.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “true” for attribute “readonly” on element “input”.
Duplicate attribute “class”.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Bad value “” for attribute “id” on element “h1”: An ID must not be the empty string.
Duplicate ID “”.
Bad value “” for attribute “id” on element “h4”: An ID must not be the empty string.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Bad value “” for attribute “size” on element “input”: The empty string is not a valid positive integer.
Bad value for attribute “sizes” on element “img”: Bad media condition: Expected a CSS media feature but saw “device-width” instead at “…ntation: portrait) 280px,”.
Attribute “complete” not allowed on element “img” at this point.
Element “img” is missing required attribute “src”.
Warnings:
The first occurrence of ID “” was here.
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