.product__item {
    display: flex;
    flex: 1 1 auto;
    flex-direction: column;
}

.product__item__box {
    display: flex;
    flex: 1 1 auto;
    flex-direction: column;
    width: calc(100% + 30px);
}

.product__item__box > .col-md-12 {
    flex: 0 0 auto;
}

.product__item__footer {
    margin-top: auto;
    padding-top: 15px;
}