#block-ui-box {
    background-color: rgba(0, 0, 0, 0.6);
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000000;
    display: none;
}

#block-ui-box div {
    height: 100%;
    position: relative;
}

#block-ui-box div div {
    height: auto;
    position: absolute;
    display: block;
    margin: 0;
    top: 50%;
    left: 50%;
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}