body { 
    background-attachment: scroll;
    background-color: #93f6ff;
    background-image: url("../images/winter/serial_bckg.jpg");
    background-position: 50% 0%;
    background-repeat: no-repeat;
    color: #000000;
    font-family: "Arial";
    font-size: 0.8em;
    height: 100%;
    margin-bottom: 0px;
    margin-left: auto;
    margin-right: auto;
    margin-top: 0px;
    position: relative;
}


#serial
{
    margin:0px auto;
    width:1024px;
    margin-top:200px;
    position:relative;
}

.btn_back
{
    position:absolute;
    top:710px;
    left:900px;
    width:150px;
    height:70px;
    z-index:5;
}