sandy.kreative

I have freshly installed wordpress 3.5.2, but i am not able to add media files. i am getting some error.

Timestamp: 8/27/2013 11:29:00 AM
Warning: Error in parsing value for ‘background-image’. Declaration dropped.
Source File: https://s.www.ads-software.com/style/wp4.css?40
Line: 468, Column: 23
Source Code:
background-image: -ms-linear-gradient(top, #fff, #f3f3f3);