move the logo in the center

hi,
I would like to move the logo in the center.
I tried with this change to the css:
# {gkLogo.cssLogo
width: 610px;
left: 0;

but with no results.
Here's the link: http://www.guardalasicilia.it/joo/

thanks
Marlais

it's ok!

#gkLogo.cssLogo {
height: 110px;
width: 216px;
left: 38%;
}

thanks