@media screen and (max-width: 767px) {
    .shop-home .product .btn.into-cart-btn {
        font-size: 12px;
        padding-left: 5px;
        padding-right: 5px;
        min-width: auto;
    }
}

@media screen and (max-width: 389px) {
    .shop-home .product .btn.into-cart-btn {
        font-size: 11px;
    }
}