CSS Validation Warning

[need_help]

My site passes the CSS validation 2.1 and CSS 3.0.

The problem is with XHTML 1.0 i get one warning.

The following notes and warnings highlight missing or conflicting information which caused the validator to perform some guesswork prior to validation. If the guess or fallback is incorrect, it could make validation results entirely incoherent. It is highly recommended to check these potential issues, and, if necessary, fix them and re-validate the document.

Warning DOCTYPE Override in effect!

The detected DOCTYPE Declaration "<!DOCTYPE xhtml PUBLIC "-//W3C//DTD HTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">" has been suppressed and the DOCTYPE for "XHTML 1.0 Transitional" inserted instead, but even if no errors are shown below the document will not be Valid until you update it to reflect this new DOCTYPE.

I know thats in the html_header file but how do i fix it ?

[tony_sar]

when you validating your page . leave Document type to default ( Detect automatically ) and validate . it shouldn't use any DOCTYPE . to validate your page except the one already in your header.