krehký Zodpovedná osoba radiátor section lacks heading proteín som šťastný akosť
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validator warnings: Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections. · Issue #1678 · w3c/aria-practices · GitHub
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semantic markup - w3c html validation error - Section lacks heading. Consider using h2-h6 elements to add identifying headings to all sections - Stack Overflow
Warning: Section lacks heading. Consider using h2-h6 elements to add identifying headings to all sections.
HTML Standard
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Headings and sections
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Section lacks heading. Consider using h2-h6 elements
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W3C: "Section lacks heading. Consider using h2-h6 elements to add identifying headings to all sections." · Issue #6 · markdown-it/markdown-it-footnote · GitHub
Validation of webcompat rendered HTML · Issue #2472 · webcompat/webcompat.com · GitHub
Headings and sections
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