Ohub.com.br W3C HTML Markup Validation
HTML markup errors and warnings
(Rescan now...)
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Errors:
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The element “button” must not appear as a descendant of the “a” element.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Attribute “button” not allowed on element “a” at this point.
Bad value “button” for attribute “type” on element “a”: Subtype missing.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
The “center” element is obsolete. Use CSS instead.
Stray end tag “div”.
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The “frameborder” attribute on the “iframe” element is obsolete.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.
Element “tl” not allowed as child of element “li” in this context. (Suppressing further errors from this subtree.)
Stray start tag “style”.
Cannot recover after last error. Any further errors will be ignored.
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