Quickblox.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Attribute “itemprop” not allowed on element “meta” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “scale” not allowed on element “img” at this point.
Duplicate ID “platform-stats”.
Stray end tag “div”.
A document must not include more than one “autofocus” attribute.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The first occurrence of ID “platform-stats” was here.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
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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