Errors:
Attribute “xmlns:wb” not allowed here.
Bad value “max-resolution: 1.99dppx” for attribute “media” on element “link”: Expected a letter, hyphen or whitespace but saw “:” instead.
Bad value “min-resolution: 2dppx” for attribute “media” on element “link”: Expected a letter, hyphen or whitespace but saw “:” instead.
Bad value “” for attribute “id” on element “section”: An ID must not be the empty string.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Attribute “arial-label” not allowed on element “span” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Heading cannot be a child of another heading.
Stray end tag “h2”.
Duplicate ID “”.
Bad value “이메일 주소
” for attribute “placeholder” on element “input”: Line feed not allowed.
Duplicate ID “item_1”.
Attribute “none” not allowed on element “a” at this point.
Duplicate ID “item_2”.
Duplicate ID “item_3”.
Warnings:
Attribute with the local name “xmlns:wb” is not serializable as XML 1.0.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Empty heading.
The first occurrence of ID “” was here.
The first occurrence of ID “item_1” was here.
The first occurrence of ID “item_2” was here.
The first occurrence of ID “item_3” was here.
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