Hi Elena,
The following CSS rules should center the label and change the color of the label’s and button’s background:
.woocommerce-info {
display: flex;
justify-content: center;
width: 100%;
background-color: #FF0000;
}
a.button.flexible-shipping-free-shipping-button {
background-color: #FF0000;
}
Please simply change the part with #FF0000;
hex color code with your preferred ones to adjust it to your needs.
Since we’re modifying the appearance of .woocommerce-info
element background color here, please mind that this change might also have an influence on other notices coming from other plugins using this container.
Kind regards,
Luke