Errors:
Attribute “xmlns:og” not allowed here.
Attribute “alt” not allowed on element “a” at this point.
Attribute “bgimage-md” not allowed on element “div” at this point.
Attribute “bgimage-sm” not allowed on element “div” at this point.
Attribute “bgimage-wlg” not allowed on element “div” at this point.
Duplicate ID “btnRemove”.
Duplicate ID “btnAdd”.
Duplicate ID “loader”.
Duplicate ID “glyph-loader”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “main-product-groups-promo1”.
Bad value “true” for attribute “async” on element “script”.
The “aria-labelledby” attribute must point to an element in the same document.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Attribute with the local name “xmlns:og” is not serializable as XML 1.0.
The first occurrence of ID “btnRemove” was here.
The first occurrence of ID “btnAdd” was here.
The first occurrence of ID “loader” was here.
The first occurrence of ID “glyph-loader” was here.
The first occurrence of ID “main-product-groups-promo1” was here.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
This document appears to be written in Polish. Consider adding “lang="pl"” (or variant) to the “html” start tag.
Poland PL