Altovicentinonline.it W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “” for attribute “href” on element “link”: Must be non-empty.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Duplicate ID “cosaro-manchette”.
Bad value “” for attribute “width” on element “img”: The empty string is not a valid non-negative integer.
Bad value “” for attribute “height” on element “img”: The empty string is not a valid non-negative integer.
No “p” element in scope but a “p” end tag seen.
Bad value “1000px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Bad value “90px” for attribute “height” on element “img”: Expected a digit but saw “p” instead.
Warnings:
The “banner” role is unnecessary for element “header”.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The first occurrence of ID “cosaro-manchette” was here.
The “complementary” role is unnecessary for element “aside”.
The “contentinfo” role is unnecessary for element “footer”.
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