Modao.cc W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “link” element with an “as” attribute must have a “rel” attribute that contains the value “preload”.
Bad value “(min-width: 1440px) and (-webkit-min-device-pixel-ratio: 1.5)” for attribute “media” on element “source”: Expected a digit, whitespace or “)” but saw “.” instead.
Bad value “(min-width: 1440px) and (-webkit-max-device-pixel-ratio: 1)” for attribute “media” on element “source”: Expected a CSS media feature but saw “-webkit-max-device-pixel-ratio” instead.
Bad value “(max-width: 1024px) and (-webkit-min-device-pixel-ratio: 1.5)” for attribute “media” on element “source”: Expected a digit, whitespace or “)” but saw “.” instead.
Bad value “(max-width: 1024px) and (-webkit-max-device-pixel-ratio: 1)” for attribute “media” on element “source”: Expected a CSS media feature but saw “-webkit-max-device-pixel-ratio” instead.
Bad value “(max-width: 640px), (-webkit-max-device-pixel-ratio: 1)” for attribute “media” on element “source”: Expected a CSS media feature but saw “-webkit-max-device-pixel-ratio” instead.
Warnings:
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).
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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