#alert-container {
    position: fixed;
    top: 0;
    left:50%;
    width: 50%;
    z-index: 9999;
}

.alert {
    margin-top: 60px;
}

.slide-in {
    animation-duration: 0.3s;
    animation-name: slideIn;
}

@keyframes slideIn {
    from {
        transform: translateX(+100%);
    }

    to {
        transform: translateX(0);
    }
}