Stm.info W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “(device-width: 320px)” for attribute “media” on element “link”: Expected a CSS media feature but saw “device-width” instead.
Bad value “(device-width: 320px) and (-webkit-device-pixel-ratio: 2)” for attribute “media” on element “link”: Expected a CSS media feature but saw “device-width” instead.
Bad value “(device-width: 768px) and (orientation: portrait)” for attribute “media” on element “link”: Expected a CSS media feature but saw “device-width” instead.
Bad value “(device-width: 768px) and (orientation: landscape)” for attribute “media” on element “link”: Expected a CSS media feature but saw “device-width” instead.
Bad value “(device-width: 1536px) and (orientation: portrait) and (-webkit-device-pixel-ratio: 2)” for attribute “media” on element “link”: Expected a CSS media feature but saw “device-width” instead.
Bad value “(device-width: 1536px) and (orientation: landscape) and (-webkit-device-pixel-ratio: 2)” for attribute “media” on element “link”: Expected a CSS media feature but saw “device-width” instead.
Bad value “true” for attribute “async” on element “script”.
Stray end tag “head”.
Start tag “body” seen but an element of the same type was already open.
Cannot recover after last error. Any further errors will be ignored.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
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