.demo-alert-notifications {
    position: fixed;
    z-index: 1040;
    right: 10px;
    top: calc(7rem + 10px);
    font-size: 1rem;
}
@keyframes demo-alert-notify {
    0% { opacity: 0; }
    100% { opacity: 1; }
}
.demo-alert-notifications .alert:last-of-type {
    animation: demo-alert-notify 0.3s linear;
    animation-fill-mode: forwards;
}