Arrowtricks.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
The “main” role is unnecessary for element “main”.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Errors:
Bad value “” for attribute “src” on element “img”: Must be non-empty.
Attribute “attribution” not allowed on element “div” at this point.
Attribute “attribution_version” not allowed on element “div” at this point.
Attribute “page_id” not allowed on element “div” at this point.
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