kit/assets/animations/animations.css

.anim-scale-in {
    animation-name: scale-in;
    animation-duration: .15s;
    animation-timing-function: cubic-bezier(0.2, 0, 0.13, 1.5);
}

@keyframes scale-in {
    0% {
        opacity: 0;
        transform: scale(0.5);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.anim-scale-out {
    -webkit-animation: scale-out-center 0.15s cubic-bezier(0.2, 0, 0.13, 1.5);
    animation: scale-out-center 0.15s cubic-bezier(0.2, 0, 0.13, 1.5);
}
@-webkit-keyframes scale-out-center {
    0% {
        -webkit-transform: scale(1);
        transform: scale(1);
        opacity: 1;
    }
    100% {
        -webkit-transform: scale(0.5);
        transform: scale(0.5);
        opacity: 0;
    }
}
@keyframes scale-out-center {
    0% {
        -webkit-transform: scale(1);
        transform: scale(1);
        opacity: 1;
    }
    100% {
        -webkit-transform: scale(0.5);
        transform: scale(0.5);
        opacity: 0;
    }
}