Thecouponproject.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
The “center” element is obsolete. Use CSS instead.
Duplicate ID “social”.
Duplicate ID “facebook”.
Duplicate ID “twitter”.
Duplicate ID “pinterest”.
Duplicate ID “instagram”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Empty heading.
The “complementary” role is unnecessary for element “aside”.
The first occurrence of ID “social” was here.
The first occurrence of ID “facebook” was here.
The first occurrence of ID “twitter” was here.
The first occurrence of ID “pinterest” was here.
The first occurrence of ID “instagram” was here.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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).
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