#back_to_oamtc {
    margin-left: 45px !important;
}

#header img {
    display: none !important;
}

#header {
    background-image: url(http://www.oeamtc.at/media/php_apps/common/images/logos/header-cityguide.png) !important;
    width: 785px !important;
    height: 118px !important;
}