/* CSS Document */
body{background-color:#000000;}

div#center {
                    margin-top:25%;
                    margin-left:50%;
                    width:1px;
                    height:1px;
                    z-index:1;
                }
#main {
                    width:800px;
                    height:288px;
                    margin-left:-400px;    /* hälfte von width*/
                    margin-top:-144px;    /* hälfte von height*/
                    z-index:2;
                    float:left;
                    position:relative;
                }