Canadel.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Stray doctype.
Duplicate ID “Layer_1”.
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Attribute “href” not allowed on element “button” at this point.
Duplicate ID “Shape”.
Duplicate ID “Page-1”.
Duplicate ID “Desktop-HD”.
Duplicate ID “Stacked-Group”.
Duplicate ID “Symbols”.
Duplicate ID “Footer”.
Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)
Warnings:
The first occurrence of ID “Layer_1” was here.
The first occurrence of ID “Shape” was here.
The first occurrence of ID “Page-1” was here.
The first occurrence of ID “Desktop-HD” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “Stacked-Group” was here.
The first occurrence of ID “Symbols” was here.
The first occurrence of ID “Footer” was here.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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