.d-none {
        display: none !important;
    }

    #snackbar {
        visibility: hidden;
        min-width: 250px;
        margin-left: -125px;
        background-color: #333;
        color: #fff;
        text-align: center;
        border-radius: 2px;
        padding: 16px;
        position: fixed;
        z-index: 1000;
        left: 50%;
        bottom: 30px;
    }

    #snackbar.show {
        visibility: visible;
        -webkit-animation: fadein 0.5s, fadeout 0.5s 2.5s;
        animation: fadein 0.5s, fadeout 0.5s 2.5s;
    }

    @keyframes fadein {
        from {
            bottom: 0;
            opacity: 0;
        }

        to {
            bottom: 30px;
            opacity: 1;
        }
    }

    @keyframes fadeout {
        from {
            bottom: 30px;
            opacity: 1;
        }

        to {
            bottom: 0;
            opacity: 0;
        }
    }