Seekmi.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The element “button” must not appear as a descendant of the “a” element.
Bad value “https://portal.cbn.net.id/cbprtl/cybertech/detail.aspx?x=Site+Info&y=cybertech|0|0|11|304” for attribute “href” on element “a”: Illegal character in query: “|” is not allowed.
Bad value “tel:(021) 806 25 200” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Bad value “tel:0812 873 73 70” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Bad value “tel:0812 873 73 76” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
The “aria-labelledby” attribute must point to an element in the same document.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Empty heading.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “type” attribute is unnecessary for JavaScript resources.
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