To customize the styles of WooCommerce buttons in Divi Cart Pro, follow these steps:

1. Locate the Module: Identify the module containing the WooCommerce button that you wish to customize.
2. Edit Module Settings: Click on the module to access its settings.
3. Navigate to Design Tab: Within the module settings, navigate to the Design tab.
4. Customize Button Styles: In the Design tab, you will find options to customize the button.
5. Make Desired Changes: Adjust the settings according to your preferences.
6. Save Changes: Save your changes to apply the new button styles.