.in-app-notification-animation
{
    animation-duration: .2s;
    animation-fill-mode: both;
    animation-name: inAppNotificationFadeInDown;
}
@keyframes inAppNotificationFadeInDown
{
    0%
    {
        opacity: 0;
        transform: translate3d(0,-100%,0);
    }
    to
    {
        opacity: 1;
        transform: translateZ(0);
    }
}