body.custom {
    background: #8db6b6 url('http://www.bestinternetsecuritysoftware.net/wp-content/uploads/2009/10/best-internet-security-software-bg.jpg') 50% 0 scroll;
}

.custom #container {
    margin-top: 1em;
    margin-bottom: 2em;
    border: opacity: 0.6
}

.custom #page {
    background: #fff;
}