@keyframes slide-down {
    0% {
        transform: translateY(-200%);
        opacity: 0;
    }
    100% {
        transform: translateY(0);
        opacity: 1;
    }
}
@keyframes slide-up {
    0% {
        transform: translateY(0);
        opacity: 1;
    }
    100% {
        transform: translateY(-200%);
        opacity: 0;
    }
}
.shownot{
    animation: slide-down;
    animation-duration: 0.5s;
    animation-direction: normal;
    animation-iteration-count: 1;
}
.hidenot{
    animation: slide-up;
    animation-duration: 0.5s;
    animation-direction: normal;
    animation-iteration-count: 1;
}