Buttons are used to trigger action. They can be used to help a user navigate to a new page or submit information that that they've entered into a form. From a UI/UX perspective, we've styled these so that they correlate with the ACS brand guidelines, but also so that they appear to be "actionable" for users who encounter them on one of our websites or applications.
When words are not enough, icons can be used alongside buttons to further enhance the experience for our users. Text labels on buttons should be more contextually descriptive and avoid using “Learn more” as this often provides a less than ideal experience for those who may be using screen readers.