.product {
    /**/
}

.product .center {
    padding: 0 0 0;
}

.product a {
    width: 49%;
    margin: 20px auto 0;
    transition: all 0.2s ease 0s;
}

.responsive_size_1 .product a {
    display: block;
    width: 90%;
}

.product img {
    width: 100%;
}