#toast {
    visibility: hidden;
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    min-width: 100px;
    border-radius: 25px;
    background-color: #666666;
    color: #FFFFFF;
    padding: 10px 20px;
    font-size: 12px;
}
#toast.show {
    visibility: visible;
    animation: fade-in 700ms, fade-out 700ms 1000ms
}
@keyframes fade-in {

    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}
@keyframes fade-out {

    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}