box-shadow: 0 -80px 156px rgba(0, 0, 0, 0.7) inset;.fin{
animation: fadein 3s;
}
.fout{
animation: fadeout 3s;
}
@keyframes fadein {
from { opacity: 0; }
to { opacity: 1; }
}
@keyframes fadeout {
from { opacity: 1; }
to { opacity: 0; }
}