Aviorair.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
The manifest-based application cache feature is obsolete. Consider using service workers instead.
Consider avoiding viewport values that prevent users from resizing documents.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Errors:
Element “div” is missing one or more of the following attributes: “role”.
Element “option” without attribute “label” must not be empty.
Bad value “100%” for attribute “height” on element “iframe”: Expected a digit but saw “%” instead.
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
Text not allowed in element “iframe” in this context.
Attribute “width” not allowed on element “a” at this point.
Attribute “height” not allowed on element “a” at this point.
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