#fixedtop {
    position: fixed; top: 0px; left: 0; right: 0; border: none; z-index: 50;
}
#center250 {
    width: <?php echo $layout_row["screenWidth"] + 100;?>px; margin: auto;
    background-color: yellow; padding: 5px;
    border: 1px solid black;
    border-top: 0;
}
#preview1 {
    background-color:yellow;
    border-bottom: 1px solid black;
    padding: 5px;
    position:fixed;
    width:99%;
    margin:0 auto;
    z-index:1;
    top:0;
    left:0;
}
#preview2 {
    text-align:center;
    padding: 5px;
    width:99%;
}