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Printability
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Language
Good. Your declared language is vi.
Dublin Core
This page does not take advantage of Dublin Core.
Document
Doctype
XHTML 1.0 Transitional
Encoding
Perfect. Your declared charset is UTF-8.
W3C Validity
Errors : 50
Warnings : 10
Email Privacy
Warning! At least one email address has been found in the plain text.
Deprecated HTML
Deprecated tags
Occurrences
<center>
2
Deprecated HTML tags are HTML tags that are no longer used. It is recommended that you remove or replace these HTML tags because they are now obsolete.
Speed Tips
Excellent, your website doesn't use nested tables.