Dehallen-amsterdam.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.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “div” not allowed as child of element “label” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “Layer_2”.
Duplicate ID “Laag_4”.
Duplicate ID “Layer_1-2”.
HTML start tag “div” in a foreign namespace context.
Duplicate ID “searchform”.
Duplicate ID “events”.
Stray start tag “script”.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
The first occurrence of ID “Layer_2” was here.
The first occurrence of ID “Laag_4” was here.
The first occurrence of ID “Layer_1-2” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “searchform” was here.
The first occurrence of ID “events” was here.
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