Pictures within CSS

[Damien Cassou]

Hi,

in Pier, the logo is displayed thanks to CSS :

.header .logo {
    background: transparent url(header-logo.png) no-repeat;
    width: 127px; height: 127px;
}


How can I get this picture, modify it and add this new picture to Squeak 
for use in another CSS ?


Thanks

-- 
Damien