/* The actual popup (appears on top) */
.popup {
    visibility: hidden;
    background-color: #555;
    color: #fff;
    text-align: left;
    border-radius: 6px;
    position: absolute;
    z-index: 1;
    padding: 10px;
}

/* Toggle this class when clicking on the popup container (hide and show the popup) */
.show {
    visibility: visible;
    -webkit-animation: fadeIn 1s;
    animation: fadeIn 1s;
}

/* Add animation (fade in the popup) */
@-webkit-keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}