Di.se W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “txtNavSearch” was here.
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).
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
This document appears to be written in Swedish. Consider adding “lang="sv"” (or variant) to the “html” start tag.
Errors:
The element “header” must not appear as a descendant of the “header” element.
Bad value “"noopener"” for attribute “rel” on element “a”: The string “"noopener"” is not a registered keyword.
Duplicate ID “txtNavSearch”.
Element “img” is missing required attribute “src”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The text content of element “time” was not in the required format: The literal did not satisfy the time-datetime format.
Element “source” is missing required attribute “srcset”.
Sweden SE