.toast {
    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;
    font-size: 17px;
    opacity: 0;
    transition: opacity 0.5s, bottom 0.5s; 
}

.toast.show {
    visibility: visible;
    opacity: 1;
    bottom: 50px;
}