Retrospring/app/assets/stylesheets/scss/groups.scss

.groups--list .list-group-item-heading {
  margin-top: 0px;
  margin-bottom: 0px;
  line-height: 1.3;
}

.groups--list .list-group-item {
  padding: 5px 7px;
}

a[role="tab"] {
  outline: 0px none;
  border: none !important;
}