#background {
    display: block;
    background-repeat: no-repeat;
    background-image: url(http://internetcity.com.tw/logo_688x568.gif);
    background-position: 50% 50%;
    background-size: 100% auto;
    width: 100%;
    height: 568px;
}

#content {
    display: inline-block;
    max-width: 688px;
    width: 100%;
    height: auto;
    border: 0px;
}