Warnings:
Potentially bad value “in-ID” for attribute “hreflang” on element “link”: The language subtag “in” is deprecated. Use “id” instead.
The first occurrence of ID “” was here.
Potentially bad value “in-ID” for attribute “lang” on element “a”: The language subtag “in” is deprecated. Use “id” instead.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The “contentinfo” role is unnecessary for element “footer”.
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).
Errors:
Bad value “” for attribute “id” on element “script”: An ID must not be the empty string.
Duplicate ID “”.
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.)
Attribute “type” not allowed on element “menu” at this point.
The “align” attribute on the “table” element is obsolete. Use CSS instead.
The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
The “border” attribute on the “table” element is obsolete. Use CSS instead.
The element “button” must not appear as a descendant of the “a” element.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Duplicate attribute “id”.
Stray start tag “script”.
Indonesia ID