#start_title{
    margin-top: -80px !important;
}

#main_menu {
    bottom: 50px;
    margin-left: 10% !important;
    margin-right: 10% !important;
    position: absolute;
    text-align: center;
    width: 80% !important;
}

#contact {
    bottom: 50px !important;
    left: 50px !important;
}

#url {
    bottom: 50px !important;
    right: 50px !important;
}

#logo {
    top: 4% !important;
}