@keyframes push-on-hover {
    40% {
        transform: scale(0.99);
    }
    100% {
        transform: scale(1);
    }
}
.push-on-hover {
    display: inline-block;
    vertical-align: middle;
    transform: perspective(1px) translateZ(0);
    box-shadow: 0 0 1px rgba(0, 0, 0, 0);
}
.push-on-hover:hover, .push-on-hover:focus, .push-on-hover:active {
    animation-name: push-on-hover;
    animation-duration: 0.2s;
    animation-timing-function: linear;
    animation-iteration-count: 1;
}