Move button up on hover

.woocommerce ul.products li.product .button {
    -webkit-transition: all 0.3s ease-in-out 0s;
    transition:         all 0.3s ease-in-out 0s;
}

.woocommerce ul.products li.product:focus .button:focus,
.woocommerce ul.products li.product:focus .button:hover,
.woocommerce ul.products li.product:hover .button:focus,
.woocommerce ul.products li.product:hover .button:hover {
    -webkit-transform: translateY(-6px);
    transform:         translateY(-6px);
}