Guestonline.fr W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Text run is not in Unicode Normalization Form C.
The value of attribute “src” on element “img” from namespace “http://www.w3.org/1999/xhtml” is not in Unicode Normalization Form C.
The first occurrence of ID “ask” was here.
Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Bad value “340px” for attribute “width” on element “iframe”: Expected a digit but saw “p” instead.
Bad value “450px” for attribute “height” on element “iframe”: Expected a digit but saw “p” instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Element “img” is missing required attribute “src”.
Duplicate ID “ask”.
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