Path.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “screen, projection” for attribute “media” on element “link”: Deprecated media type “projection”. For guidance, see the Media Types section in the current Media Queries specification.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “placeholder” not allowed on element “button” at this point.
Element “dl” is missing a required instance of child element “dd”.
Duplicate ID “q”.
Duplicate ID “network-search-button”.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The first occurrence of ID “q” was here.
The first occurrence of ID “network-search-button” was here.
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).
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