Stairsupplies.com W3C HTML Markup Validation
HTML markup errors and warnings
(Rescan now...)
Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)
Bad value “tel:1 (866) 226 6536” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Element “img” is missing required attribute “src”.
Attribute “placeholder_color” not allowed on element “img” at this point.
Duplicate ID “Layer_2”.
Duplicate ID “Layer_1-2”.
Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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).
The “contentinfo” role is unnecessary for element “footer”.
The first occurrence of ID “Layer_2” was here.
The first occurrence of ID “Layer_1-2” was here.
United States US