.woocommerce div.product form.cart .variations select {
    border-radius: 20px;
    text-align: left;
    padding-left: 7%;
}

.woocommerce div.product form.cart .button {
    height: 35px;
    border-radius: 20px;
    color: black;
}

.single-product .quantity input[type=number] {
    text-align: center;
    height: 35px!important;
    border-radius: 20px!important;
    margin: 0 35px 0 0;
}