How do I center the body bg image?

I have this code:

body {background: #ffffff url('./images/body.png') no-repeat;  font-size:16px; font-family:Arial, Helvetica, sans-serif;color:#666; margin:0 auto;padding:0; }

Code (markup):

I can't find a way to center that background image. I need it to be 100% width and the exact width is to big so I can't add it as numbers..

Any idea?

 

Try this:

body {background: #ffffff url('./images/body.png') no-repeat center;  font-size:16px; font-family:Arial, Helvetica, sans-serif;color:#666; margin:0 auto;padding:0; }

Code (markup):

 

And that's it.