Hata :
Line 13, Column 49: Using the meta element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
<META HTTP-EQUIV="Content-Language" CONTENT="TR">
Çözüm :
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
Hata:
Not registered dediği tüm hatalar
Çözüm : http://www.w3.org/html/wg/drafts/htm...metadata-names buradaki koıdları kullan