html, body {
    overflow: hidden;
    margin: 0px;
    background: white;
    width: 100%;
    height: 100%;
}

div.centerline_right {
    position: absolute;
    right: 0px;
    width: 100%;
    height: 100px;
    margin: auto;
    left: 0px;
    top: 0px;
    bottom: 0px;
    background: url('/image/layer1.png');
    background-repeat: no-repeat;
    background-size: contain;
    background-position: center;
}

div.centerline_left {
    display: table-cell;
    position: absolute;
    width: 100%;
    height: 300px;
    margin: auto;
    left: 0px;
    top: 0px;
    bottom: 0px;
}