.vctdropfilecontainer {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background-image: url(images/drop.png);
    background-position: center;
    background-size: 64px;
    background-repeat: no-repeat;
    opacity: 0.0;
    pointer-events: none;
    z-index: 3;
}