.btn-novo{
    color: #000;
    font-size: 13px;
    border: 2px solid #000;
    border-radius: 4px;
    padding: 4px 9px;
    display: inline-block;
    margin-top: 3px;
}

.products-grid li.item .product-block:hover .btn-novo{
    color: #d5ac5c;
    border-color: #d5ac5c;
}