#modalog-mask{
    display: block;
    position: fixed;
    height: 100%;
    width: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    background-color: rgba(0,0,0,0.4);
    z-index: 9999;
    table-layout: fixed;

    transition-property: opacity;
    transition-duration: 0.5s;
    transition-timing-function: ease-out;
}

#modalog-wrapper{
    display: block;
    position: absolute;
    text-align: center;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    overflow-y: auto;
    overflow-x: hidden;

    transition-property: opacity;
    transition-duration: 0.5s;
    transition-timing-function: ease-out;
}

#modalog-wrapper:before{
    content: "";
    display: inline-block;
    width: 0;
    height: 100%;
    vertical-align: middle;
}

#modalog-mask.shown{
    opacity: 1;
}