#toast {
    visibility: hidden;  
    position: fixed;       
    bottom: 100px;
    left: 50%;                 
    transform: translateX(-50%);    
    min-width: 100px;   
    border-radius: 1.5rem;    
    background-color: #666666;   
    color: #FFFFFF;   
    padding: 15px 25px; 
    z-index: 10000;
}

#toast.show {
    visibility: visible; 
    animation: fade-in 500ms, fade-out 500ms 1500ms
}
@keyframes fade-in {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}
@keyframes fade-out {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}