Walksofitaly.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “true” for attribute “async” on element “script”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Start tag “a” seen but an element of the same type was already open.
Stray end tag “span”.
Stray end tag “a”.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Attribute “webkitallowfullscreen” not allowed on element “iframe” at this point.
Attribute “mozallowfullscreen” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
No “p” element in scope but a “p” end tag seen.
Stray start tag “script”.
Cannot recover after last error. Any further errors will be ignored.
Warnings:
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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