Porternovelli.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Element “div” not allowed as child of element “button” in this context. (Suppressing further errors from this subtree.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “” for attribute “poster” on element “video”: Must be non-empty.
Bad value “(max-width: 1800) 100vw, 1800” for attribute “sizes” on element “img”: Bad media condition: Non-zero lengths require a unit at “(max-width: 1800) 100vw,”.
Bad value “(max-width: 1300) 100vw, 1300” for attribute “sizes” on element “img”: Bad media condition: Non-zero lengths require a unit at “(max-width: 1300) 100vw,”.
Bad value “(max-width: 1000) 100vw, 1000” for attribute “sizes” on element “img”: Bad media condition: Non-zero lengths require a unit at “(max-width: 1000) 100vw,”.
Bad value “(max-width: 1500) 100vw, 1500” for attribute “sizes” on element “img”: Bad media condition: Non-zero lengths require a unit at “(max-width: 1500) 100vw,”.
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