#dv-overlay {
    height: 100%;
    width: 100%;
    position: fixed;
    left: 0;
    top: 0;
    background-color: #000;
    overflow-x: hidden;
    transition: 0.5s;
    background-color: rgba(0,0,0,0.8);
    z-index: 99999;
    display: none;
}
#dv-overlay #overlay-content {
    position: absolute;
    top: 50%;
    left: 50%;
    padding:20px;
    transform: translate(-50%,-50%);
    -ms-transform: translate(-50%,-50%);
    background-color: white;
    box-shadow: 0 0 0 9999px rgba(0,0,0,0.5);
}