سلام به نظر شما کدهای زیر ایرادی داره؟
<html><body bgcolor="#FFFFFF"></body></html>
یکی از ایراداتی که سایتهای معرفی شدخ توسط آقا مجید در بالا ایراد زیره که ازش سر در نیاوردم :

Error Line 1 column 0: no document type declaration; implying "<!DOCTYPE HTML SYSTEM>".
<html><body bgcolor="#FFFFFF"></body></html>
The checked page did not contain a document type ("DOCTYPE&quot declaration. The Validator has tried to validate with a fallback DTD, but this is quite likely to be incorrect and will generate a large number of incorrect error messages. It is highly recommended that you insert the proper DOCTYPE declaration in your document -- instructions for doing this are given above -- and it is necessary to have this declaration before the page can be declared to be valid.

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