Make card borders rounded (2nd and 3rd layouts)

Add this code to the Custom CSS field on the Style tab of your Team Showcase widget’s settings:

.eapp-team-showcase-member-card-photo-photo {
  border-radius: 10px;
  width: 100%;
}

.eapp-team-showcase-member-card-gallery-component {
  border-radius: 10px;
}