Burgerszoo.nl W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Errors:
Bad start tag in “img” in “head”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Stray end tag “noscript”.
Stray end tag “head”.
Start tag “body” seen but an element of the same type was already open.
Duplicate attribute “src”.
Bad value “25-5-2018” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
Bad value “24-5-2018” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
Bad value “23-5-2018” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
Bad value “22-5-2018” for attribute “datetime” on element “time”: The literal did not satisfy the time-datetime format.
Bad value “vlog-items” for attribute “rel” on element “a”: The string “vlog-items” is not a registered keyword.
Bad value “social-items” for attribute “rel” on element “a”: The string “social-items” is not a registered keyword.
Bad value “https://www.googletagmanager.com/ns.html?id=GTM-
TQW8B78” for attribute “src” on element “iframe”: Tab, new line or carriage return found.
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