From Htmlpedia
Contents |
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OpenSP: No document type declaration; will parse without validation
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Cause:
No document type specified at the begin of the document.
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Example:
 |
<html>
<head>
<title>my_title</title>
...
</head> |
 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>my_title</title>
...
</head> |
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Solution:
Add a doctype before the <html> tag.
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