Checklist.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate attribute “itemprop”.
Bad value “_ios” for attribute “target” on element “a”: Reserved keyword “ios” used.
Bad value “_android” for attribute “target” on element “a”: Reserved keyword “android” used.
Duplicate ID “top-search”.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
Bad value “footer container-fluid” for attribute “id” on element “footer”: An ID must not contain whitespace.
Bad value “_blog” for attribute “target” on element “a”: Reserved keyword “blog” used.
Bad value “_help” for attribute “target” on element “a”: Reserved keyword “help” used.
Warnings:
The first occurrence of ID “top-search” was here.
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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