Hahnair.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “charset” attribute on a “meta” element found after the first 1024 bytes.
The element “button” must not appear as a descendant of the “a” element.
The first child “option” element of a “select” element with a “required” attribute, and without a “multiple” attribute, and without a “size” attribute whose value is greater than “1”, must have either an empty “value” attribute, or must have no text content. Consider either adding a placeholder option label, or adding a “size” attribute with a value equal to the number of “option” elements.
Bad value “50px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Bad value “100px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
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 “target” on element “a”: Browsing context name must be at least one character long.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Attribute “aria-required” is unnecessary for elements that have attribute “required”.
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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