@keyframes rubberBand {

    0% {
    transform: scale3d(1, 1, 1);
    }

    30% {
    transform: scale3d(1.25, 0.75, 1);
    }

    40% {
    transform: scale3d(0.75, 1.25, 1);
    }

    50% {
    transform: scale3d(1.15, 0.85, 1);
    }

    65% {
    transform: scale3d(.95, 1.05, 1);
    }

    75% {
    transform: scale3d(1.05, 0.95, 1);
    }

    100% {
    transform: scale3d(1, 1, 1);
    }

}

.rubberBand {
animation-duration: 1s;
animation-name: rubberBand;
animation-fill-mode: both;
}