#main_big_order_button {
    display: none;
    position: fixed;
    top: 150px;
    left: -109px;
    -moz-box-shadow: 0 0 5px #000;
    -webkit-box-shadow: 0 0 5px #000;
    box-shadow: 0 0 5px #000;
    z-index: 200;
}