HubSpot's CTA builder provides you with the necessary tools for customizing your Calls-To-Action. By working under the Information and Design tabs within the tool, you can seamlessly adjust the look of your CTAs. If you were interested in changing more advanced features, such as hover effects, you can take it a step further and custom edit the CSS styles.
HubSpot implements Auto Generated CSS styles to the CTA you are building, which can be altered through the Custom CSS box, located next to it. Follow the instructions below to learn how to change the hover effects through editing the Custom CSS styles.