Kei.pl W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The first occurrence of ID “myModalDomenowy” was here.
The first occurrence of ID “activePopup” was here.
The first occurrence of ID “promotion__btn” was here.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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).
Errors:
Bad value “” for attribute “role” on element “div”.
End tag “b” violates nesting rules.
Duplicate ID “myModalDomenowy”.
Duplicate ID “activePopup”.
The “align” attribute on the “h2” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “align” attribute on the “p” element is obsolete. Use CSS instead.
Duplicate ID “promotion__btn”.
The “center” element is obsolete. Use CSS instead.
Bad value “” for attribute “id” on element “section”: An ID must not be the empty string.
CSS: “background-size”: Parse Error.
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