Zennio.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.
Errors:
Element “div” not allowed as child of element “h1” in this context. (Suppressing further errors from this subtree.)
Bad value “” for attribute “srcset” on element “img”: Must contain one or more image candidate strings.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
When the “srcset” attribute has any image candidate string with a width descriptor, the “sizes” attribute must also be present.
Element “h3” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
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