#woocommerce-product-data ul.product_data_tabs li.bulkdiscount_options a {
    line-height: 16px;
    border-bottom: 1px solid #d5d5d5;
    text-shadow: 0 1px 1px #fff;
    color: #555;
    background: #f1f1f1 no-repeat 9px 9px;
    width: auto !important;
}

#bulkdiscount_product_data a.button-secondary {
    margin: 5px 10px;
}

#bulkdiscount_product_data textarea {
    width: 60% !important;
}