.rbLayer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #000000;
    background-color: rgba(0, 0, 0, 0.8);
}

.rbImage {
    display: block;
    /* top margin must match var 'imagePadding' from respbox.js */
    margin: 10px auto 0 auto;
}

.rbLayerClose {
    position: fixed;

    /* top and right offset should be var 'imagePadding' from respbox.js * 2 */
    top: 20px;
    right: 20px;

    width: 27px;
    height: 27px;
    background-image: url('close.png');
}