.transform-in,
.transform-out {
    display: block;
    -webkit-transition: all ease 0.5s;
    transition: all ease 0.5s;
}

.transform-in {
    -webkit-transform: translate(-50%, -50%) scale(1);
    transform: translate(-50%, -50%) scale(1);
}

.transform-out {
    -webkit-transform: translate(-50%, -50%) scale(0.5);
    transform: translate(-50%, -50%) scale(0.5);
}