#snackbar {
    visibility: hidden;
    min-width: 250px;
    background-color: #333;
    color: #fff;
    text-align: center;
    border-radius: 2px;
    padding: 16px;
    position: fixed;
    z-index: 9999;
    left: 50%;
    top: 30px;
    font-size: 17px;
    transform: translateX(-50%);
    font-family: 'Roboto', sans-serif;
}

#snackbar.show {
    visibility: visible;
    animation: fadein 0.5s;
}

@keyframes fadein {
    from {top: 0; opacity: 0;}
    to {top: 30px; opacity: 1;}
}