/***** MODAL DIALOG ****/
#modal {
    /* Underlay covers entire screen. */
    position: fixed;
    top: 0px;
    bottom: 0px;
    left: 0px;
    right: 0px;
    background-color: rgba(0,0,0,0.5);
    z-index: 1000;
    /* Flexbox centers the .modal-content vertically and horizontally */
    display: flex;
    flex-direction: column;
    align-items: center;
    /* Animate when opening */
    animation-name: fadeIn;
    animation-duration: 150ms;
    animation-timing-function: ease;
}

    #modal > .modal-underlay {
        /* underlay takes up the entire viewport. This is only
    required if you want to click to dismiss the popup */
        position: absolute;
        z-index: -1;
        top: 0px;
        bottom: 0px;
        left: 0px;
        right: 0px;
    }

    #modal > .modal-content {
        /* Position visible dialog near the top of the window */
        margin-top: 10vh;
        /* Sizing for visible dialog */
        width: 80%;
        max-width: 600px;
        /* Display properties for visible dialog*/
        border: solid 1px #999;
        border-radius: 8px;
        box-shadow: 0px 0px 20px 0px rgba(0,0,0,0.3);
        background-color: white;
        padding: 20px;
        /* Animate when opening */
        animation-name: zoomIn;
        animation-duration: 150ms;
        animation-timing-function: ease;
    }

    #modal.closing {
        /* Animate when closing */
        animation-name: fadeOut;
        animation-duration: 150ms;
        animation-timing-function: ease;
    }

        #modal.closing > .modal-content {
            /* Animate when closing */
            animation-name: zoomOut;
            animation-duration: 150ms;
            animation-timing-function: ease;
        }

@keyframes fadeIn {
    0% {
        opacity: 0;
    }

    100% {
        opacity: 1;
    }
}

@keyframes fadeOut {
    0% {
        opacity: 1;
    }

    100% {
        opacity: 0;
    }
}

@keyframes zoomIn {
    0% {
        transform: scale(0.9);
    }

    100% {
        transform: scale(1);
    }
}

@keyframes zoomOut {
    0% {
        transform: scale(1);
    }

    100% {
        transform: scale(0.9);
    }
}