Errors:
A document must not include more than one “meta” element with its “name” attribute set to the value “description”.
Element “style” not allowed as child of element “li” in this context. (Suppressing further errors from this subtree.)
Bad value “follow noopener noreferrer” for attribute “rel” on element “a”: The string “follow” is not a registered keyword.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
CSS: “height”: Unknown dimension.
CSS: “max-width”: Too many values or values are not recognized.
CSS: “max-height”: Too many values or values are not recognized.
Bad value “” for attribute “src” on element “img”: Must be non-empty.
Bad value “mailto:?subject=Tweedaagse%20leergang%20%26#8216;AVG-professional%20in%20het%20onderwijs%26#8217;&body=%20https://www.vosabb.nl/tweedaagse-leergang-avg-professional-in-het-onderwijs/” for attribute “href” on element “a”: Illegal character in fragment: “#” is not allowed.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The “contentinfo” role is unnecessary for element “footer”.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Netherlands NL