Gratisaftehalen.nl W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
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.
Attribute “async” not allowed on element “link” at this point.
Bad value “//fonts.googleapis.com/css?family=Open+Sans+Condensed:300,700|Roboto:100,200,300,400,500,600,700|Roboto+Condensed:300,400,700|Material+Icons|Delius” 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.
Bad value “prefetch” for attribute “rel” on element “a”: The string “prefetch” is not a registered keyword.
Element “stong” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Bad value “true” for attribute “async” on element “script”.
Element “script” must not have attribute “async” unless attribute “src” is also specified.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “navigation” role is unnecessary for element “nav”.
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