Metageek.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
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 “https://fonts.googleapis.com/css?family=Roboto+Slab:100,200,300,400,500|Roboto:100,200,300,400,500” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “li” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Attribute “href” not allowed on element “img” at this point.
Bad value “button” for attribute “type” on element “a”: Subtype missing.
Stray end tag “div”.
End tag for “body” seen, but there were unclosed elements.
Unclosed element “div”.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
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