Errors:
Bogus doctype.
Quirky doctype. Expected “<!DOCTYPE html>”.
Bad value “20px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Duplicate ID “sign-in-button”.
Bad value “100%” for attribute “width” on element “video”: Expected a digit but saw “%” instead.
Bad value “auto” for attribute “height” on element “video”: Expected a digit but saw “a” instead.
Bad value “” for attribute “src” on element “img”: Must be non-empty.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)
Bad value “40x40” for attribute “id” on element “g”: Not a valid XML 1.0 name.
Bad value “40x40-slices” for attribute “id” on element “g”: Not a valid XML 1.0 name.
Duplicate ID “Page-1”.
Duplicate ID “40x40”.
Duplicate ID “Combined-Shape”.
Duplicate ID “40x40-slices”.
Warnings:
The first occurrence of ID “sign-in-button” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “Page-1” was here.
The first occurrence of ID “40x40” was here.
The first occurrence of ID “Combined-Shape” was here.
The first occurrence of ID “40x40-slices” was here.
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